Biogeochemical Cycles

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

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

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

Tags

NGSS.MS-ESS2-1

Nitrogen is part what important molecule(s)?

• DNA

• Proteins

• Lipids

• ATP

Tags

NGSS.MS-LS1-7

Which type of organism performs nitrogen fixation?

• Bacteria

• Viruses

• Humans

• Plants and phytoplankton

Plants obtain nitrogen through photosynthesis.

• True

• False

Tags

NGSS.MS-LS1-6

All living things can use nitrogen gas from the atmosphere.

• True

• False

Tags

NGSS.MS-LS2-3

What is one way carbon is released into the atmosphere?

• Burning fossil fuels

• Evaporation of water

• Photosynthesis

Tags

NGSS.MS-ESS3-4

Which is a non-renewable resource?

• Sunlight

• Fossil fuels

• Wind

• Water

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

• condensation
• evaporation
• transpiration
• exhaling

Tags

NGSS.MS-ESS2-4

Where is carbon stored in the environment?

• Fossil fuels
• Wood of trees
• Calcium carbonate (shells and bones)
• All of the above

Tags

NGSS.MS-ESS2-1

NGSS.MS-LS2-3