Environmental Science Exam Review

The movement of rock particles by ice, wind, water or gravity is called ___________.

• Weathering

•  Erosion

• Deposition

•  Sedimentary

Which is NOT derived from living things?

• petroleum

• coal

• peat

• uranium

Land where it is possible to grow crops is called

• organic land

•  arable land

•  vegetative land

• all of the above

The energy in most ecosystems comes from

•  green plants

•  the sun.

•  wind.

• All of the above

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Overgrazing of grasslands can lead to reduced range quality. Two of the major effects of overgrazing are

• erosion and desertification

• eutrophication and increased methane production

• higher fire potential and increased productivity

• higher primary productivity and ammonification

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What is meant by overgrazing?

• When the cows eat too much and get sick

• When a section of land is used for an extended period of time without sufficient recovery periods

• When too much grass is planted

• When a section of land is not used for an extended period of time and becomes overgrown

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Erosion of soil from land that has been strip-mined can be partially controlled by

• Replacing the soil that was removed.

• Planting Plants

• Letting the land recover on its own

• None of the Above

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Which layer of the atmosphere contains weather, clouds, pollution and life forms?

• mesosphere

• stratosphere

• thermosphere

• troposphere

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Which of the following statements helps to explain why fresh water is a limited resource?

• most of Earth's water is salt water.

• About 71% of Earth's surface is covered by water

• Most of Earth's freshwater is not liquid water usable by humans

• the Earth's water is mostly salt water and the water that isn't salt water is frozen and not usable by humans

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Which of the following would be the best way for a desert farmer to reduce water loss from evaporation and seepage and thus conserve water?

• dig deeper wells

• recycle cooling water and waste water

• install low-flow toilets

• install a drip irrigation system

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