Unit 8: Introduction to Ecology

What happens when water evaporates?

• It changes from a gas to a solid.

• It changes from a solid to a liquid.

• It doesn't change, it just moves from one environment to another.

• It changes from a liquid to a gas.

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What happens when there is more water than the air can hold?

• The water turns into vapor and rises up.

• The water falls to the ground as precipitation.

• The water evaporates and turns into clouds.

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Which of the following consumes Carbon?

• Plants

• Animals

• Decomposers

• all living things contain carbon

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Photosynthesizing plants affect the carbon cycle by...

• Creating more carbon atoms

• Reducing the amount of carbon in the soil

• Absorbing CO2 from the atmosphere, lowering atmospheric levels of carbon

• None of the above; plants do not affect the carbon cycle

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The burning of fossil fuels contributes to the carbon cycle in what way?

• Increases the amount of CO2 in the atmosphere

• Increases the amount of O2 in the atmosphere

• Decreases the amount of CO2 in the atmosphere

• Decreases the amount of O2 in the atmosphere

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Decomposers contribute to the carbon cycle in what way?

• They turn oxygen into CO2.

• They take carbon from living organisms and return it to the atmosphere as carbon dioxide.

• They turn CO2 into organic, living carbon molecules.

• They create organic carbon and keep it stored in the earth forever.

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Eutrophication is caused by what?

• Increase in CO2 in the atmosphere.

• Increase of nitrogen and phosphorous in lakes and estuaries.

• Driving our cars and using too many electronics.

• Increasing air and water temperatures on earth.

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Examples of decomposers include:

• humans, dogs, and whales

• trees, tomato plants, and phytoplankton

• viruses

• fungi, worms, and bacteria

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The process of plants losing water through their leaves is called ____.

• condensation
• evaporation
• transpiration
• exhaling

In evaporation, water _______

• turns from a liquid state to vapor (gas)

• falls from the sky like rain or snow

• forms clouds

• gets locked into ice

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