Nitrogen and Carbon Cycles

When humans EXHALE, we release __________________.

• Oxygen

• Carbon Dioxide

• Nitrogen

Tags

NGSS.MS-LS1-2

How does carbon in a grass plant get into a lion?

• The lion eats an antelope that ate the grass

• Carbon from grass doesn't end up in a lion.

• The lion absorbs the carbon given off by transpiration

• The lion breathes in carbon given out by the plant

Tags

NGSS.MS-LS2-3

How much nitrogen is fixed by fossil fuel burning and commercial nitrogen fixation annually?

• 10 Tg

• 80 Tg

• 140 Tg

• 200 Tg

What is the amount of carbon (in gigatons) released into the atmosphere through respiration?

• 50 Gt

• 100 Gt

• 92 Gt

• 7 Gt

Tags

NGSS.HS-ESS2-6

NGSS.HS-LS1-7

NGSS.HS-LS2-5

What do bacteria near plant roots combine to form ammonia, ammonium, nitrites, and nitrates?

• Carbon, hydrogen, and oxygen

• Nitrogen, hydrogen, and oxygen

• Nitrogen, carbon, and sulfur

• Oxygen, hydrogen, and sulfur

Tags

NGSS.MS-LS2-3

What do plants absorb to build amino acids and proteins?

• Ammonia

• Nitrites

• Nitrates

• Oxygen

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

How much carbon (in gigatons) is stored in plants?

• 650 Gt

• 100 Gt

• 92 Gt

• 10 Gt

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is released when animals die and decompose?

• Nitrogen and oxygen

• Ammonia and ammonium

• Carbon dioxide and water

• Sulfur and phosphorus

How nitrogen is "fixed" into useable form for plants

• only through action of bacteria

• only through lightning

• through action of bacteria & lightning

• through photosynthesis

Which process in the nitrogen cycle involves the conversion of nitrogen gas from the atmosphere into ammonia by bacteria?

• Nitrogen fixation

• Nitrification

• Denitrification

• Ammonification