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Score for this quiz: 79 out of 100 * Submitted May 22 at 5:14pm This attempt took 1,308 minutes. Question 1 1 / 1 pts What are two ways that precipitation moves through the water cycle? Sleet and evaporation Correct! Rain and snow That's correct! Rain, snow, sleet, and hail are examples of precipitation. Hail and groundwater Snow and transpiration Question 2 0 / 1 pts
Processes involved in the water cycle are represented by letters in the diagram. In which answer below correctly identifies the corresponding process? Correct Answer D-Precipitation B-Transpiration You Answered A-Condensation Try again. Review the section on the water cycle in the "Biogeochemical Cycles" lesson. C-Evaporation Question 3 1 / 1 pts
Which organisms make their own food by absorbing energy from the sun through photosynthesis? Correct! Primary producers That's correct! Plants produce oxygen and glucose through the process of photosynthesis. Decomposers Secondary consumers Primary consumers Question 4 1 / 1 pts Burning of plant material returns carbon primarily to the ____. Correct! atmosphere
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That's correct! When plant material is burned, carbon is released as carbon dioxide, which enters the Earth's atmosphere. vegetation herbivores water Question 5 1 / 1 pts Which of the following interactions between organisms would be considered a commensalism relationship? Ticks attach to animals and feed on their blood. Correct! Remora fish attach to sharks and eat the scraps they leave behind. That's correct! Commensalism is when one organism benefits, and the other is neither helped nor
harmed. The remora benefits by getting a free ride and leftover scraps of food, and the shark doesn't even realize it's there. Lions hunt zebra at night as a source of food. Raccoons and bears compete for the same food source. Question 6 1 / 1 pts What is the branch of biology that focuses on how organisms relate to one another and their surroundings? Correct! Ecology That's correct! Ecology is the study of how organisms relate to one another and their environment. Anatomy Biology
Icthyology Question 7 0 / 1 pts The diagram below shows the nitrogen cycle. What is the role of nitrates in the cycle? You Answered It is used by bacteria to synthesize ammonia. Try again. Review the section on the biogeochemical cycles in the "Biogeochemical Cycles" lesson. It is used by animals for atmospheric nitrogen. It is used by animals for carbohydrate synthesis. Correct Answer It is used by plants for protein synthesis. Question 8
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1 / 1 pts The carbon cycle includes two main categories of processes. Some that release carbon into the atmosphere and some that act as carbon reservoirs. The diagram shows both major process categories and gives examples of activities for both. Which of these disruptions would cause an excess output in the carbon cycle? Reduction in the consumption of fossil fuels Increase in marine biota Correct! Destruction of terrestrial biota That's correct! Land-based organisms have high concentrations of carbon. Decline in cement production Question 9
1 / 1 pts The following is an example of a food chain from sagebrush to -> steppe ecosystem. Which of the organisms is the tertiary consumer? Sagebrush->Squirrel->Snake- >Hawk Sagebrush Squirrel Correct! Hawk That's correct! The Hawk is the tertiary consumer, or top-level predator. Snake Question 10 1 / 1 pts In a process called transpiration, plants get rid of excess water through pores in the leaves called stomata. This excess water is then
released into the atmosphere as part of the water cycle. Which of the following terms best describes how the released water enters the atmosphere? Condensation Capillary action Correct! Evaporation That's correct! Water is released by plants through transpiration into the atmosphere to rejoin the water cycle. Precipitation Question 11 4 / 4 pts Match the ecological relationship with the correct description. Correct! Commensalism
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One organism benefits, and the other is neither helped nor harmed. Correct! Competition Two organisms vie for the same food source. Correct! Mutualism Both organisms benefit. Correct! Parasitism One organism benefits, and the other is harmed. Correct! Predation One organism kills and eats another organism. Good work. It is very important to understand the different types of relationships in an ecosystem.
Question 12 4 / 4 pts Match the ecological organization with the correct description. Correct! Community Different populations that live in the same area Correct! Ecosystem Community and its physical environment Correct! Population Group of organisms from the same species that live in the same area Correct! Species Group of similar organisms that produce fertile offspring
Correct! Individual A single organism within the ecosystem Good work. It is amazing how God organized everything on the planet to work together. Question 13 4 / 4 pts Match the biogeochemical cycle with the correct description. Correct! The circulation of this life- sustaining element in various forms through Earth's systems Carbon cycle Correct! The process where this gas is converted into usable forms as it circulates through Earth Nitrogen cycle Correct!
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Rain and weathering causing rocks to release phosphate ions and other minerals Phosphorous cycle Correct! This element being released from rocks and weathering that is taken up by plants from soil Sulfur cycle Correct! This compound cycling through evaporation, condensation, and precipitation Water cycle Good work! You really understand how things cycle on our planet. Question 14 Not yet graded / 4 pts Explain the following terms as they relate to the water cycle: evaporation, condensation, precipitation, and transpiration. Your Answer:
Evaporation is when water is changed from a liquid from the ground to gas in the atmosphere. Then, condensation turns that gas back into water. Then, precipitation brings the water from the atmosphere back to the surface. The water infiltrates in to the soil from the rainfall. Which is where transpiration takes place. The water seeps through tiny pores and openings in leaves of plants. Question 15 1 / 1 pts Which feature defines an organism's niche? Its habitat How it reproduces Correct! Its role in its habitat That's correct! Niche is an organism's job or role in the ecosystem.
How it moves Question 16 1 / 1 pts What is a linear sequence of energy transfer from one organism to the next? Correct! Food chain That's correct! Food chains are represented linearly, starting with the producer and ending with the top predator. Food web Energy pyramid Trophic levels Question 17 0 / 1 pts
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Which of the following would not be included in a description of an organism's niche? The humidity level it prefers When it reproduces Correct Answer Its color You Answered Its trophic level Try again. Go back and review the section on Habitat and Niche in the "Habitat vs. Niche" lesson. Question 18 1 / 1 pts What percent of energy is available as you move up each tropic level? Correct!
10% That's correct! The 10% rule states that only 10% of the energy moves up each trophic level. 25% 100% 50% Question 19 1 / 1 pts Which of these organisms would most likely be found at the top of an energy pyramid? Snapper—a secondary consumer Kelp—a primary producer Correct! Sharks—a tertiary consumer
That's correct! The top level consumer is found at the top of an energy pyramid. Clams—a primary consumer Question 20 1 / 1 pts The physical location of an ecosystem in which a given species lives is called a ___. Trophic level Biotic zone Niche Correct! Habitat That's correct! A habitat is where an organism lives. Question 21 1 / 1 pts
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Which of the following resources do plants not compete for? Nutrients Correct! Warmth That's correct! Warmth is not a resource that is critical for a plant's survival. Light Water Question 22 1 / 1 pts A contest between organisms seeking the same resources is describing what concept? Niche Habitat
Correct! Competition That's correct! Two species competing for the same resource is referred to as competition. Microhabitat Question 23 1 / 1 pts The diagram shows the cycling of nutrients in an ecosystem. The removal of which of the following groups would cause an immediate decrease in the amount of energy flowing through the system? Decomposers Consumers Correct!
Producers That's correct! Producers gather energy from the sun and convert it to usable molecules for consumers. Removing producers from any food chain or web will cause an immediate decrease in available energy. Inorganic nutrients Question 24 1 / 1 pts Which of the following statements is true about natural systems? Producers are at the bottom of the energy pyramid but at the top of the biomass pyramid. Consumers form the bottom levels of both the energy pyramid and the biomass pyramid. Correct! Producers are at the bottom level of both the energy pyramid and the biomass pyramid.
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That's correct! Producers account for most of the biomass and most of the available energy in any given ecosystem. Consumers are at the bottom of the energy pyramid but at the top of the biomass pyramid. Question 25 4 / 4 pts Match the term with the correct definition. Correct! Habitat The place where an organism lives and grows Correct! Microbiome A community of microorganisms that inhabit a specific environment Correct! Microhabitat
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A small, specialized ecosystem within a larger environment Correct! Niche The role an organism plays in a community Good work. You understood the difference between habitats and niches. Question 26 4 / 4 pts Match the term with the correct description. Correct! Consumer Organism that is a heterotroph Correct! Decomposer Organism that decomposes organic material Correct!
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Producer Organism that is an autotroph Correct! Apex predator Organism found at the top of a food web Good work! Did you know if the apex predator is removed from an ecosystem, it will fall apart? Question 27 Not yet graded / 4 pts Explain why no two species can occupy the same niche at the same time. Please answer using complete sentences. Your Answer: The competitive exclusion principle tells us that two species can't have exactly the same niche in a habitat and stably coexist. That's because species with identical niches also have identical needs, which means they would compete for precisely the same resources. Question 28 1 / 1 pts
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What is the major cause of the greenhouse effect? Gases in the atmosphere release the sun's heat. Gases in the ozone layer release the sun's heat. Gases in the ozone layer absorb the Earth's heat. Correct! Gases in the atmosphere absorb and trap Earth's heat. That's correct! Greenhouse gases trap heat close to Earth causing the global temperature to rise. Question 29 1 / 1 pts Mullet are estuarine fish that feed on plankton and plant matter. Predators of the mullet include sharks, pelicans, and dolphins. The graph shows changes in the mullet population. What could explain the change in the mullet population over time?
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Mullet prey decreased in the area. Mullet parasites decreased in the area. Correct! The amount of aquatic plants in the area decreased. That's correct! If the aquatic plant population decreases, that will result in a decrease in mullet. The amount of plankton increased in the area. Question 30 1 / 1 pts What is the system of all living things and their interactions with all of the world spheres called? Atmosphere Correct! Biosphere
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That's correct! The biosphere includes all forms of life that are present on Earth, from plants, animals, bacteria, and fungi, as well as the environments that they live in. Hydrosphere Geosphere Question 31 0 / 1 pts What term describes the day-to- day changes in temperature, cloud cover, wind, and precipitation conditions? Season Biosphere You Answered Climate
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Try again! Review the section on Climate and Weather in the "Biosphere, Climate, and Biomes lesson." Correct Answer Weather Question 32 1 / 1 pts The graph shows changes in the human population over time. Which of the following statements would predict a consequence of these changes? A decrease in deforestation due to technological improvements An increase in the number and kinds of organisms worldwide Correct! A decrease in the availability of natural resources That's correct! With an ever- growing human population, the
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availability of nature resources decreases. An increase in biosphere stability Question 33 1 / 1 pts In tropical regions, the crocodile lies with its mouth open, and the plover bird flies into its mouth to feed on bits of meat stuck in the crocodile's teeth. The crocodile doesn't eat the bird, and benefits from the tooth-cleaning. Which term best describes the relationship between the crocodile and the plover? Commensalism Correct! Mutualism That's correct! Since the crocodile benefits by getting its teeth cleaned and the plover benefits by getting a meal, this is an example of mutualism. Parasitism
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Predation Question 34 1 / 1 pts A species of snapping turtle has a tongue resembling a worm that it uses to attract small fish. Which best describes the interaction between the fish and the snapping turtle? Competition Correct! Predation That's correct! The snapping turtle uses its tongue to attract fish and then feeds on it. Symbiosis Parasitism
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Question 35 1 / 1 pts The climatogram shows a graph of a tundra biome. Which statement describes the factors included in the climatogram? The climatogram demonstrates how wasy it is for biotic organisms to survive in the biome. The climatogram allows scientists to track the availability of biotic factors in a biome during the year. Correct! The climatogram shows the change in abiotic factors over the course of the year. That's correct! The climatogram shows precipitation and temperature, which are abiotic factors. The climatogram shows the availability of abiotic nutrients during each month. Question 36 1 / 1 pts
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When the environment has reached carrying capacity, which of the following conclusions can be made? The growth and immigration rate is greater than the death and emigration rate. Correct! The growth and immigration is equal to the death and emigration rate. That's correct! The number of organisms being added to a community is equal to the number of organisms leaving a community. The growth and immigration rate is less than the death and emigration rate. The growth and immigration rate is exponential to the death and emigration rate. Question 37 1 / 1 pts What is a group of the same species living together in the same geographic location called?
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Geographic range Age structure Correct! Population That's correct! That description describes a population. Growth rate Question 38 1 / 1 pts The graph shows the growth of Paramecium aurelia in a culture dish for 14 days. What would happen if the second species of paramecium were introduced in the culture dish with the Paramecium aurelia? The population of Paramecium aurelia would increase above 250 since the two species occupy the same niche.
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The populaion of Paramecium aurelia would increase above 250 since they would mate with the new species. The population of Paramecium aurelia would remain at 250 since the species compete with each other for resources. Correct! The population of Paramecium aurelia would be lower than 250 since the new species is competing with it for resources. That's correct! The two different species of paramecium would compete for resources, causing the Paramecium aurelia to decrease. Question 39 1 / 1 pts Which of the following correctly pairs biotic factors with an effect on the biosphere? Biotic factors would decrease the oxygen in the soil. Biotic factors would decrease the amount of water. Correct!
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Biotic factors would increase the number and variety of predators. That's correct! Biotic factors are living things, which include predators. Biotic factors would increase the average temperature. Question 40 1 / 1 pts What term describes the average weather conditions of a region? Temperature Correct! Climate That's correct! Climate describes the long-term weather conditions for a geographic region. Seasons Weather
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Question 41 1 / 1 pts The relationship between wolves and moose on Isle Royale depicts the predator-prey relationship. The moose are the main prey for wolves on this isolated island. A food shortage resulting from wolves eating too many moose keeps the wolf population in check. How does this relationship affect these populations? Usually either the predator or prey will become extinct. Correct! The relationship controls the population size of both species. That's correct! The number of moose available for prey keeps the populations of both species from exponential growth. The predators and prey are in competition with each other. The predator species usually has exponential growth. Question 42
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1 / 1 pts Suppose there is a population of both light and dark-colored beetles that live in a forest of trees with light-colored trunks. Which of the following results is most likely to occur to the beetle population due to predation over time? Correct! The number of light-colored beetles in the population will increase. That's correct! Since the light- colored beetles will camouflage well with the trees with light- colored trunks, they are less likely to be preyed upon, and their populations will survive and reproduce. There will be more dark-colored beetles than light-colored beetles in the population. The number of light-colored beetles will decrease. The dark-colored beetles will move to a different type of tree.
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Question 43 1 / 1 pts Bats eat insects that damage crops and are vectors for disease. While bats hibernate during the winter months, the fungus that causes white-nose syndrome (WNS) covers the bat's face and wings. WNS has a 100% mortality rate. What is the relationship between bats and the fungus that causes WNS? Correct! Parasitism That's correct! The fungus benefits, but the bat dies. So this is an example of parasitism. Predation Commensalism Mutualism Question 44 1 / 1 pts
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Which of the following examples describes climate? It rained every day this week. Yesterday it was cold and windy. It was cloudy and cool for two weeks. Correct! Summers are usually hot and dry. That's correct! Describing weather conditions for a longer period of time describes climate. Question 45 1 / 1 pts Which of the following factors does NOT influence a biome? Precipitation Temperature Correct!
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How many people live there That's correct! Human population size does not affect the characteristics of a biome. Geographic location Question 46 0 / 1 pts Which of the following statements best describe age structure diagrams? They show how many individuals are within a given amount of space. They show the actual population size of each individual by providing specific age groups and genders. You Answered They show the number of males and females of several species and include age categories.
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Try again! Review the section on Populations in the "Population, Density & Dispersion, Age Structure" lesson. Correct Answer They are useful in predicting future trends in a population relating to age groups of males and females. Question 47 4 / 4 pts Match the type of symbiosis with the correct description. Correct! Commensalism A relationship where one organism benefits, and the other organism is neither helped nor harmed Correct! Mutualism A relationship where both organisms benefit Correct!
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Parasitism A relationship where one organism benefits and the other organism is harmed Good work. It is important to understand the types of symbiosis. Question 48 4 / 4 pts Match each biome with the correct description. Correct! Desert Has few plants and receives less than 25 cm of rainfall per year Correct! Grassland Has seasonal rainfall and grasses that continue to grow after grazing Correct! Taiga Has dense, evergreen coniferous forest and long, cold winters
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Correct! Temperate forest Has cone bearing and leaf bearing trees, and the trees lose their leaves during the winter Correct! Tropical rainforest Has the largest number of plant and animal species on Earth Correct! Tundra Has a permanent frozen layer, and moss grows there Good work, you have a solid understanding of biomes. Question 49 4 / 4 pts Match the population factor with the correct description. Correct! Age structure
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The composition of a population in terms of age and gender Correct! Density and distribution The measurement of organisms residing in a specific area Correct! Geographic range The area where a species resides Correct! Growth rate The increase or decrease of a population Good work! There has been a lot of interesting research done on the changes in populations in Yellowstone National Park with the return of the wolves. Question 50 Not yet graded / 4 pts How do populations of predator and prey affect each other? Please answer using complete sentences.
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Your Answer: The populations of predator and prey affect each other through a complex interaction often referred to as the predator-prey cycle. When the population of prey increases, the population of predators also increases due to the abundance of food. However, as the predator population grows, the prey population decreases because of increased predation. This, in turn, leads to a decrease in the predator population due to a lack of food. Eventually, the prey population starts to increase again due to reduced predation, and the cycle continues. Question 51 1 / 1 pts Phytoplankton are primary producers in the marine environment. In which zone do phytoplankton live? Sublittoral Zone Correct! Photic Zone That's correct! Phytoplankton performs photosynthesis to
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produce their own food so they must live in the photic zone. Benthic Zone Aphotic Zone Question 52 1 / 1 pts Elisabeth is an oceanographer. On which of the following research expeditions would she travel from the photic zone to the aphotic zone? A snorkel trip from the intertidal zone to 55 feet off the beach A research vessel from the beach to the open ocean A scuba trip from the surface down 100 feet Correct! A submersible traveling from the ocean surface to the abyss
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That's correct! The ocean surface is the photic zone and the abyss is the aphotic zone. Question 53 1 / 1 pts Why are estuaries important? Correct! They provide breeding and nursery grounds for marine organisms. That's correct! Estuaries are a major source of biodiversity by serving and breeding and nursery grounds to marine organisms. They remove salt from the seawater. They remove carbon dioxide from the ecosystem. They add oxygen to the ecosystem. Question 54 1 / 1 pts A developer wants to build a hotel along the Indian River Lagoon estuary in Florida. What impact
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would this most likely have on the estuary? Correct! Loss of breeding and nursery grounds for marine species That's correct! Building next to an estuary would pollute the habitat and cause loss of breeding and nursery ground for many marine organisms. Decreased salinity of the estuary water Increased primary productivity in the estuary Loss of coral reefs and the species that live there Question 55 1 / 1 pts Why is it beneficial to use a model that shows the interactions of Earth's systems including the atmosphere, biosphere, geosphere, and hydrosphere? Correct!
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Causes and effects of global change may involve more than one Earth system. That's correct! All of Earth's systems can interact to both cause and effect global change. One Earth system may cause a global change, but all the system are affected. More that one Earth system may interact, but only one system is affected. Causes and effects are restricted to only one Earth system. Question 56 4 / 4 pts Match the freshwater biome with the correct description. Correct! Estuary This ecosystem occurs where freshwater flows into oceans. Correct!
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Lake This ecosystem is a basin filled with freshwater that is surrounded by land. Correct! River This ecosystem begins underground or from mountain snowmelt and flows. Correct! Wetland This ecosystem occurs where water covers a layer of soil for at least part of the year Good work. You understood the parts of the freshwater system. Question 57 4 / 4 pts Match the ocean zone with the correct description. Correct! Benthic Zone
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This zone experiences extreme pressure and frigid temperatures, and there is no light. Correct! Intertidal Zone This zone experiences changes in water level during high and low tide. Correct! Neritic Zone This zone receives nutrients from land and extends over the continental shelf. Correct! Pelagic Zone This zone makes up over 90% of the world's oceans and ranges from 200–10,000 m deep. Good work. You understand the parts of the marine system. Question 58 Not yet graded / 4 pts Why is biodiversity important for ecosystem health and the services
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the ecosystem provides? Provide a specific example using complete sentences. Your Answer: Biodiversity is important for ecosystem health, and the service of the ecosystem provides because biodiversity provides ecosystem stability. It brings good and services onto humans, and it can strengthen environments from erosion, natural disasters, and harsh climates. Quiz Score: 79 out of 100 Previous Next
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