Carbon

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

• Water

• Atmosphere

• Sun

• Ground

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

• respiration and photosynthesis

•  decomposition and respiration

The circulation of the element Carbon among Earth's atmosphere, land, oceans, and organisms is called _____________.

• the Carbon Cycle

• the Oxygen Cycle

• the Carbon dioxide Cycle

• the Water Cycle

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

If the plant population decreased, the amount of carbon in the atmosphere would ____________________.

• Increase

• Decrease

• Stay the same

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Carbon enters the soil through dead plant or animal matter.

• Decomposition

• Respiration

• Photosynthesis

• Diffusion

Tags

NGSS.MS-LS2-3

What does NOT produce carbon dioxide?

• Photosynthesis

• Burning Fossil Fuels

• Animal respiration

• Plants decaying

Tags

NGSS.MS-LS1-6

How do plants affect the air that animals and people breathe?

• Plants use oxygen from the air to make their own food

• Plants release pollution into the air

• Plants take in carbon dioxide and release oxygen

• Plants take in oxygen and release carbon dioxide

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

________________________ is part of the air, rocks, soil, and all living things.

• Nitrogen

• Carbon

• Water

• Silver

Tags

NGSS.MS-ESS2-4

Is Carbon a metal, nonmetal, or metallioid?

• Metal

• Nonmetal

• Metalloid

When humans EXHALE, we release ____________________.

• Oxygen

• Nitrogen

• Water

• Carbon Dioxide