Water Pollution: Indicate which statements are true and which are false The BOD of a system is a measure of the amount of oxygen required to break down the organic matter aerobically; the more organic matter, the lower the BOD. True Excess fertilizer runoff from farmland can put excessive nutrients into water. This development is known as eutrophication of the water. True +

Q: A parsec is the   a. average distance between Earth and the sun.   b. the distance that ligh...

A: Astronomy is study of all the object and matter in the universe after the earth atmosphere, this inc...

Q: Why should we not be surprised that stromatolites spread over Early Triassic seafloors?

A: The Triassic era is a geological period that lasted approximately 252 million years and ended 201 mi...

Q: El Niñoa. prevents the ocean current from upwelling.b. causes stagnation of the nutrients.c. changes...

A: El Nino is the event that occurs when the high pressure along the coast of South America diminishes,...

Q: What percentage of water on the planet is fresh (nonsalty)?

A: Water is a vital thing for the survival of many species in the world. The advent of water in the wor...

Q: ANALYZING. GIVEN THE FOLLOWING SCENARIO, ANSWER WHAT IS ASKED.  1. Bert is an engineer and was curre...

A: A hazard is any agent that can cause harm to humans and the environment. Risk is the possibility of ...

Q: The South Florida rainbow snake is likely extinct. What most likely happened at some point in the pa...

A: Snakes are creatures that most people fear. Eco-balance is managed by snakes in the ecosystem. We fi...

Q: A persistent question in this chapter is how to reconcile our responsibility as consumers with the d...

A: Mineral extraction and processing involve the excavation process of rock in greater depth to acquire...

Q: Why does the present day stream valley bend sharply at the San Andreas Fault?

A: We know that the san andreas fault is an active strike slip fault located at the western coast of Ca...

Q: Explain 1.Water pollution arising from industrial and community waste residues seeping into undergro...

A: Water pollution is the contamination of water bodies such as lake, river, stream or marine environme...

Q: A farmer planted three wheat varieties viz. Borlaug, Zincole-2016 and Pakistan 2013. During threshin...

A: Wheat is the crop that is grown at large all over the world. It is the crop that helps in formation ...

Q: Why is the Coriolis effect always to the right in the Northern Hemisphere and to the left in the Sou...

A: The inertial force that forces the objects to move opposite to their direction within their motion f...

Q: The brightest luminosity class is   a. Ia.   b. Ib.   c. IV.   d. V.

A: Luminosity is a measure of electromagnetic emitted power light emitting object. In astronomy it is u...

Q: Which type of rock forms 75% of the Earth's surface? A. Igneous rock B. Sedimentary rock O C. Metamo...

A: Rocks are naturally occurring aggregates of minerals. The Earth's surface is made up of different ty...

Q: 4. How do you compare climate on land and climate near the sea? 5. Why do you think some locations t...

A: The Earth is enclosed by a blanket of gases called the atmosphere. The atmosphere serves as a protec...

Q: Which ocean basin has the greatest potential fetch?

A: In Oceanographic language a fetch in a part of the surface of the ocean that experience wind blowing...

Q: you find small fragments of what might be bone. What criteria can you use to distinguish fossil bone...

A: A Fossil is preserved dead remains of pre-existing living organisms or traces of those organisms. Fo...

Q: Will people in California be in great danger from a seismic sea wave when a major earthquake occurs ...

A: The state of California is located on the western coast of North-America and lies next to the Pacifi...

Q: In a distant planetary sytem, a plant is at a distance of 2 AU from its star. the brightness of the ...

A: INTRODUCTION: The luminosity of a star is described as the net electromagnetic radiation which a sta...

Q: Use the table as an example, what is the difference between an E7 and an E0 galaxy? Explain.

A: E0 galaxy: E0 galaxy looks like a circle. It is ball shaped. They are smaller in size. They have ver...

Q: What evidence is there that certain kinds of bacteria and archaea were present in Archean time?

A: Geology is the branch of science that studies the past, present, and future of the Earth. It studies...

Q: I have seen photos of the massive coastal modifications being made in Dubai. What happens when human...

A: Coastal adjustments: They are the arrangements that people make to change the shape of the coast and...

Q: Thinking Critically How do human activities interfere with coastal processes? What steps can be take...

A: Various biological processes are constantly evolving along the physical, chemical, and biological sh...

Q: Explain how the geologist developed the geologic time scale.

A: Earth science is the study of the Earth and the various processes that are going on in the Earth sys...

Q: What do we mean when we say something is dense?

A: Firstly, let's discuss something about, Dense: Marked by compactness

Q: Follow the directions of the image

A: Evaporated calcite is a rock produced by the precipitation of calcium carbonate after the evaporatio...

Q: Where do the gamma bursts come from?

A: Gamma ray burst are immense energetic explosion which occur in distance galaxies. They are the brigh...

Q: 1. Explain what weather is and it's important to human existence.

A: Weather is a natural condition of the atmosphere surrounding us. The local weather is the state of t...

Q: In petrology, modal analyses of rocks is important for determining the mineralogical composition of ...

A: The digital image analysis by pixel counting helps them to calculate the modal calculation of a part...

Q: In what kind of environment was this rock likely deposited? And What is the sedimentary structure?  ...

A: The given rock is light brown in color with luster and layering seen in its texture. Sedimentary roc...

Q: A test cylinder of rock has a diameter of 12.6 cm and a length of 14 cm. When dry its weight is 50 N...

A: Porosity is explained as the ratio of void spaces (gaps) to that of the total volume of the rock sam...

Q: Name 4 major satellite configurations that constitute the GNSS.

A: Earth is the third planet in the solar system. It has a natural satellite and many artificial satell...

Q: what is the land use of forest?

A: The Forest biome is one of the major biomes of Earth. Forest is an area of land which is dominated b...

Q: How were the crustal elements of Gondwanaland assembled?

A: A supercontinent is a large continental crustal body made up of the assemblage of the maximum portio...

Q: List seven climate “wedges.”

A: Climate is the long-term average of the weather over almost 30 years. The primary factors of climate...

Q: Which of the following explains how igneous rock is formed? O A. Rocks are changed by pressure, chem...

A: Rock is aggregate of mineral, sediment and other rock particle which is solid naturally occurring sh...

Q: What features of coral reefs help explainwhy they are so biologically diverse?

A: The Earth is made up of four spheres known as lithosphere, atmosphere, hydrosphere, and biosphere. A...

Q: Define what is Soil drainage ?

A: Soil drainage is a natural process by which water moves in and out of the soil due to the effect of ...

Q: Which of the following soil actions contributes to overall net losses of organic matter (and therefo...

A: Loss of natural matter additionally happens on the grounds that disintegration washes away dirt and ...

Q: Based on the data in the picture, how do you think oceans absorb and holdheat? How do you think the ...

A: As per the data given, the heat capacity of ocean is more than that of soil because water can hold m...

Q: Compare the source, transition, and floodplain zones of streams and rivers.

A: The Earth is made up of four spheres known as lithosphere, atmosphere, hydrosphere, and biosphere. A...

Q: Other than petroleum and natural gas, what is the most valuable material taken from marine sediments...

A: Marine sediments are a sedimentary loads that are placed on the ocean surface. They are originated f...

Q: Sedimentary and metamorphic rock are informally classified as "secondary rock types".  What does thi...

A: rocks and ore are naturally occurring solid mass or aggregate of minerals which are valuable in natu...

Q: How does today's world differ from the world of the past in relation to Continental Drift?

A: Firstly, let us discuss something about Continental Drift, Continental drift: It is the hypothesis w...

Q: Why do sandy beaches end up with a relatively narrow range of grain sizes?

A: The Earth essentially exists in a dynamic state. Many processes operate in its system, such as const...

Q: In 1992, a NASA team began a project called Spaceguard Survey, calling for an international watch fo...

A: Our solar system contains many celestial bodies other than planets. Comets are one type of celestial...

Q: Compare and contrast the biodiversity of the various landbiomes.

A: Biodiversity is defined as the diversity of various life forms on the planet. The biodiversity distr...

Q: Explain the Several types of farming ?

A: Agriculture is the cultivation plants and livestock. Farming is the rise from sedimentary human civi...

Q: Describe how active, dormant, and extinct volcanoes differ from one another.

A: A volcano is a fissure or rupture on the crust of any planetary object such as Earth, through which ...

Q: Two students are discussing the process of building mountains on the Earth. Student one says, "When ...

A: According to the plate tectonics theory, the surface of the Earth is made up of various hard lithosp...

Q: What is the silica tetrahedron structural difference between pyroxene and amphibole?

A: Rocks are naturally occurring solid aggregates of minerals. Rocks are composed of different types of...