Question 8 If the primary producers in a five-level trophic pyramid produce 100,000 calo- ries, how much of that energy will reach the apex predator? 0:00/0:15 A B C «» С 1 calorie 10 calories 10,000 calories Speed: 1x polar bear seal big fish and squid small fish Algae & bacteria | ✿ ❤ Paused

Question 8 If the primary producers in a five-level trophic pyramid produce 100,000 calo- ries, how much of that energy will reach the apex predator? 0:00/0:15 A B C «» С 1 calorie 10 calories 10,000 calories Speed: 1x polar bear seal big fish and squid small fish Algae & bacteria | ✿ ❤ Paused

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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What if we were able to restore some critical salmon habitat, like the forests surrounding the spawning streams? To test this restoration, increase K to 40,000 fish. What would that do to the MSY value? [ Select ] Does this mean you would be able to harvest more or less fish? [ Select ]
2 In a temperate grassland ecosystem, total primary production was 12,740 g/m/yr. Annual net secondary production by the herbivorous insect community was 320.5 g/m/yr. Total net tertiary production by spiders was 22.6 g/m/yr. Calculate the trophic efficiency from the first trophic level to the third trophic level.
Question 1: In the land between the lakes, Elk and Bison Prairie, we currently have 125 bison and 15 elk. These species are known to compete for some but not all of their resources. We are able to determine that the carrying capacity of the bison K1 is 200 and that the alpha (competition coefficient) is 4. The carrying capacity for Elk (K2) is 100 and the beta (competition coefficient) is 1. Part a) At what population size of elk will the isocline of the bison intersect (K1/alpha)? Round up to the nearest whole number
describing how to increase the number of top carnivores that live in Yellowstone. For instance, if it was desired to increase the number of gray wolves that the habitat could support, and any animal or plant species of any trophic level could be manipulated, which ones should be changed and how?To begin, brainstorm and identify the different trophic levels that may be found in the gray wolf habitat in Yellowstone. For example, there must be producers and first- and second-level consumers. The gray wolf should be the tertiary, or “top consumer,” that is affected by the number of members in the other trophic levels. Make a connection between members of each trophic level and the energy pyramid, and how they change as the numbers of gray wolves increase.
Rank the following trophic examples lowest to highest in terms of likely trophic efficiencies. (In determining your answer consider the trophic efficiency between the top consumer and the most primary food source given in each example.) (A) A lake with large fish grazing on phytoplankton (B) A pasture with cattle grazing on grasses (C) Humans feeding on the fish grazing on phytoplankton in A (approximate FCR of the fish is 1 lb/lb) (D) Humans feeding on the cattle grazing on grasses in B (approximate FCR of the mammals is 7 lb/lb) OB
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Solve 4.
Question 3: I introduced 2 species of super-mutant ant species into my terrarium. These are the only species competing for resources. Species 1's common name is the TEN-headed ZINGer ant and they have a population size of N1 and a carrying capacity of K1. The blue line shows the isocline for species 1. Species 2's common name is the Evil Ant. The population size of species 2 is N2 and the carrying capacity is K2. The green line shows the isocline for species 2 The red dot is the present combination of N1 and N2. Part a) Given the data how will the population of both species (N1 and N2) change- pick the correct colored arrow (pink, brown, black, or red) to show the direction that the combination of N1 and N2 will change
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QUESTION 9 Species extinctions in natural ecosystems can lead to what? O A. The Coriolis Effect OB. Ocean acidification OCA loss of ecosystem services OD.Cow methane production QUESTION 10 Climate change tends to have the largest negative social impacts on which group of countries? O A. Developed countries that produce the highest levels of carbon emissions per capita O B. Countries that play baseball. OC. Countries with very high income leveliTer capita OD.Developing countries that produce the lowest levels of carbon emissions per capita QUESTION 11 If "we" are to hold global warming to 1.5 degrees Celsius, what must be the initial target with regard to greenhouse gas emissiorn O A. We must achieve net zero carbon dioxide exchange with the atmosphere by approximately 2050. O B. The increase in global greenhouse gas emissions must be accelerated OC.It is nota big deal if the global average temperature increases by 1.5 degrees Celsius or more O D. More nitrous oxide should be used by…
QUESTION 5 Consumers Producers a Decomposers Nutrients available to producers Abiotic reservoir Geologic processes The graphic below represents a generalized nutrient cycle. Study it and answer the questions which follow. a. Nutrient cycles are also referred to as biogeochemical cycles. EXPLAIN the term biogeochemical cycle. 1 2 3 4 7 8 9 10 11 12 b. Suggest what would be an abiotic reservoir for: i. Sulphur - ii. Carbon - c. State one geologic process that makes nutrients available to producers. d. iii. If the nutrient being considered is carbon, what processes would be represented by the arrows labelled a, b and c? iv. Suggest why the process represented by c is important to Agriculture sector. е. i. Recently, the island was blanketed by ash from the eruption of the La Soufrière volcano in a sister island. Do you consider this to be a form of pollution? Explain your reasoning. ii. Suggest one advantage and one disadvantage of the ash fall.
Marine biology question 6) Just before the beginning of the fishing season you capture, tag, and release 4500 adult cod (Gadus morhua) from the Barents Sea. At the end of the season you learn from the United Kingdom Trawler Fleet working these waters that a total 195,500 fish were taken in the season, of which 1,950 fish were found bearing your tag. From these data calculate the “fishing ratio”, also known as the rate of exploitation, of this fishery. What was the size of the cod population actually available to this fishery at the beginning of the season?