Carbon And Nitrogen Cycles Flashcards

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1
Q

What do nitrifying bacteria do

A

They oxidate ammonia and turn it into nitrates in the soil

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2
Q

What to denitrifying bacteria do

A

Break down nitrates in the soil into nitrogen in the air

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3
Q

What do nitrogen fixing bacteria do?

A

Turn nitrogen in the air into nitrates into the soil and into plants

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4
Q

How does nitrogen fixing happen

A

Lightning - makes nitrogen react with oxygen in air

Nitrogen fixing bacteria

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5
Q

What do the plants do with the nitrates?

A

Plants absorb nitrates from the soil and use them to make proteins for growth

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6
Q

What removes CO2 from the atmosphere

A

Plants through photosynthesis

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7
Q

What happens when animals eat plants

A

Passes the carbon compounds in the plant to animals

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8
Q

What puts CO2 back into the atmosphere?

A

Plant and animal respiration
Plant and animal decay by decomposers
Fossil fuels being burned

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9
Q

What happens when plants and animals decay?

A

They are broken down by bacteria and fungi which release CO2

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10
Q

What do decomposers do

A

They turn proteins and urea into ammonia

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