Cycling of Matter

The Law of Conservation of Mass (Matter)

• Do not use too much mass.

• Matter con not be created or destroyed.

• Energy flows through an ecosystem.

• Matter moves through an ecosystem.

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This image shows the _________ cycle.

• Carbon

• Oxygen

• Nitrogen

• Water

During the Carbon Cycle...

• carbon is stored in the soil.

• carbon is stored in plants.

• carbon is stored in the atmosphere.

• all of the above.

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Precipitation is...

• water that changes from a gas to a liquid.

• water that falls from clouds.

• water that changes from a liquid to a gas.

• water that goes up to the atmosphere.

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The two main gases that cycle through the Oxygen Cycle are...

• carbon dioxide and oxygen

• oxygen and nitrogen

• water and oxygen

• carbon dioxide and nitrogen

One of the benefits of photosynthesis is that it creates more _________ for the atmosphere.

• carbon

• nitrogen

• water

• oxygen

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There is nitrogen gas in the atmosphere.

• True

• False

What is the function of bacteria in the Nitrogen Cycle?

• They prevent nitrogen from harming the plants.

• They remove nitrogen from the soil.

• They remove oxygen from the soil.

• They return nitrogen to the system.

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Which of the following is NOT true about systems that cycle matter?

• Living things play a role in the cycling of matter.

• Matter is not created as it cycles through the environment.

• Some matter is destroyed as it cycles through the environment.

• Matter is constantly cycling through the environment.

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These formed when decomposing organisms were exposed to pressure, high temperatures and bacteria over hundreds of millions of years.

• bacteria

• fossil fuels

• carbon dioxide

• carbon cycle

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