Cycles of Matter

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Cycles of Matter

Leaves have tiny pores. These pores help plants release water into the

2 points

Llithosphere

Hydrosphere

Biosphere

Atmosphere

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Transpiration is an important component of which cycle?

2 points

water

oxygen

carbon

nitrogen

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Which effect of tropical deforestation will have the greatest impact on the functioning of the water cycle?

2 points

It can decrease the runoff over the Earth's surface

It can decrease the flow of underground aquifers

It decreases the transpiration of water into the atmosphere from dense tropical forests

It decreases surface temperatures where the dense forest canopy used to be

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Which process describes how water is returned to the Earth through the atmosphere?

2 points

precipitation

animals respiring

runoff into a stream

plants undergoing photosynthesis

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Which is a role of respiration in the carbon cycle?

2 points

to use carbon to make organic molecules

to release carbon dioxide into the atmosphere

to absorb carbon dioxide from the atmosphere

to use carbon dioxide to break down remains of dead organisms

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Which best describes the role of photosynthesis in the carbon cycle?

2 points

to aid in the production of carbon dioxide

to break down food into carbon and oxygen atoms

to release compounds containing carbon into the atmosphere

to create food by combining carbon, oxygen and hydrogen atoms

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Which statement best explains what happens to dead organisms?

2 points

Decomposers use the material found in rotting organisms as food

Natural chemical processes cause the materials to rot directly into rich soil

Decay is a natural process that destroys materials found in rotting organisms

Carnivores break down the waste of organisms and return the material to the environment

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Animals require a constant source of carbon compounds for the proper functioning of body processes. In which way are animals able to obtain usable sources of atmospheric carbon?

2 points

through the decomposition of water

through the combustion of fossil fuels

through aerobic respiration of bacteria

through digestion of plants that carry out photosynthesis

Clear selection

Why does atmospheric carbon increase as a result of deforestation?

2 points

Grass often replaces forests

Farmers plant corn and soybeans

There are fewer trees to absorb it

The trees shade the soul for the sun

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