Carbon and Nitrogen Cycle Quiz

What is the purpose of a rotating compost bin?

• To decompose biodegradable materials

• To store overripe fruit

• To grow plants

• To trap heat in the atmosphere

What are the two major elements that compost supplies plants with?

• Calcium and Potassium

• Oxygen and Hydrogen

• Carbon and Nitrogen

• Sodium and Chlorine

What is the branch of science that studies the interactions of molecules containing carbon?

• Chemistry

• Biology

• Geology

• Physics

How many valence electrons does a carbon atom have?

• 6

• 2

• 8

• 4

Where is carbon found as a reservoir?

• In living organisms

• All of the above

• In the ocean

• In the atmosphere

What is the primary gas in the atmosphere?

• Nitrogen

• Hydrogen

• Carbon Dioxide

• Oxygen

What is the process where nitrogen is fixed into ammonia and ammonium?

• Nitrogen fixation

• Photosynthesis

• Ammonification

• Denitrification

What can happen if excess nitrogen from plant fertilizer drains into bodies of water?

• It can cause excessive growth of aquatic producers

• It can decrease dissolved oxygen in the water

• Both A and B

• None of the above

What is the purpose of denitrifying bacteria in the soil?

• To produce carbon dioxide

• To convert nitrates and nitrites into atmospheric nitrogen gas

• To fix nitrogen into ammonia

• To perform photosynthesis

What is the result of the burning of fossil fuels?

• Release of nitrogen gas

• Release of oxygen

• Release of hydrogen gas

• Release of carbon dioxide