Usa Test Prep Answers

24 July 2022
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18 test answers

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raises the risk of increases the amount of pests in that area.
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Growing the same crop on the same field year after year
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they get sick or die
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A farmer is using a crop duster to help spray chemicals on his crops to kill insects. The chemicals the farmer uses seeps into the soil and drains into the nearby river. How does this effect the animals that live in the river?
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Cutting down the rainforest destroys the habitat for a number of species.
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Human activity has led to clear cutting of the world's rainforests. Which is the best explanation of why this change has been detrimental?
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they are consumed by fish and marine mammals and block the digestive systems of these organisms.
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Tiny plastic pellets, like the pellets in the image, enter marine ecosystems through accidental spillage or by the decomposition of plastic wastes. How do these pellets affect marine ecosystems?
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they lose their natural habitats and sources of food
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Trees all over Earth are being cut for wood. As a result, forests are disappearing fast. How does this affect the animals that live in the forests?
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Deciding to build new conservatories on the land.
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With a limited amount of land and an increasing human population to feed from this land, each human's piece of land to produce their food is becoming smaller and smaller. Protecting the land is very important and can be done in a variety of ways. Which one does not describe a way to conserve farmable land?
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Marine organisms die because oil stops oxygen from entering the water.
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How do oil spills affect marine ecosystems?
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leachate
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Landfills that are very old, poorly designed, or mismanaged can create a number of harmful environmental consequences such as wind-blown litter, attraction of animals, and generation of liquid ________.
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increase population of all specis
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Earth's Oceans are impacted by climate changes, pollution, and overfishing. Which is not a result of human activity?
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Less water will be collected from the bottom of the sodded tray than the soil tray. There will be less eroded soil in the collected water.
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You and your classmates are about to conduct the experiment described above. Consider the materials and procedures. How do you predict the results of each trial will vary?
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urban heat island
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This is a city or metropolitan area that is significantly warmer than its surrounding rural areas due to human activities.
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deforestion
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This is the removal of trees and the conversion of forest lands to farmlands, logged areas, or cities.
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pollution
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This is the contamination of an environment beyond natural correction.
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erosion
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This is the movement of soil, mud and rock due to the downward movement of wind, water or ice.
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urbanization
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This is the movement of people from rural to urban areas. It is closely linked to industrialization and modernization.
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convection
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The process of circular motion in the Earth's mantle that causes the plates of the lithosphere to move is called
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changes in the polarity of the earth's magnetic field
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The prominent, symmetrical, magnetic patterns related to sea-floor spreading from mid-ocean ridges are a direct result of which phenomenon?
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the continents are drifting apart.
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Seafloor spreading is a phenomenon that occurs at mid-oceanic ridges, such as the Mid-Atlantic Ridge. New crust, which is created by volcanic activity, spreads away from the ridge. Seafloor spreading could be one reason