Unit #3 (Biological Carbon Cycle)

A principle that states that matter can be transformed but cannot be created or destroyed

• Law of conservation of energy

• Law of conservation of momentum

• Law of conservation of mass

• Law of conservation of matter

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NGSS.MS-PS1-5

The process by which organisms use oxygen to release the energy in food and carbon dioxide and water

• photosynthesis

• cellular respiration

• chemosynthesis

• metabolism

When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.

• Water
• Atmosphere
• Sun
• Air

How do living organisms return carbon to the atmosphere in the carbon cycle?

• respiration and photosynthesis
•  decomposition and respiration

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NGSS.HS-LS2-5

What is happening at 1?

• respiration: releasing CO2
• decomposing CO2 in the soil
• photosynthesis: absorbing CO2
• turning CO2 from the atmosphere into organic molecules

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Which of the following add carbon dioxide to the atmosphere?

• volcanoes
• combustion of fossil fuels
• animal and plant respiration
• all of these

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Organisms that do not decompose can be buried and become what?

• water
• nutrients
• air
• fossil fuels

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NGSS.MS-ESS3-1

Which one of these removes CO₂ to the atmosphere?

• cooking with gas
• planting trees
• burning wood
• riding in a bus

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What are fossil fuels made from?

• Plants and animals that are buried underground for millions of years.

• They absorb it from the atmosphere.

• Water

• Wind

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NGSS.MS-LS4-1

Why does too much carbon dioxide in the atmosphere cause climate change?

• It cools our planet.

• Blocks out UV rays.

• Lets light escape.

• Traps heat and warms the planet.

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