Biogeochemical Cycles Review

Which one of these does not add CO₂ to the atmosphere?

• cooking with gas
• planting trees
• burning wood
• riding in a bus

What does not produce carbon dioxide?

• Photosynthesis
• Burning Fossil Fuels
• Animal respiration
• Plants decaying

Tags

NGSS.MS-LS1-6

Organisms that do not decompose can be buried and become what?

• water
• nutrients
• air
• fossil fuels

Why is the ocean important to the carbon cycle?

• It keeps sediment containing carbon underwater for millions of years
• The ocean gives out more carbon then it takes in (increases global warming)
• The ocean isn't important to the carbon cycle.

Tags

NGSS.HS-ESS2-6

Carbon can be found in...?

• The atmosphere
• Inside of the Earth
• Fossil fuels
• All of the above!

How do plants get the nitrogen they need?

• from the air
• from the soil or water in which they live
• from the Sun
• from broken-down rocks

Which of the following describes the role of nitrogen-fixing bacteria in the nitrogen cycle? Nitrogen-fixing bacteria convert

• nitrates intro nitrogen gas
• ammonia into proteins
• nitrogen gas into nitrates

• proteins into nitrates

How nitrogen is "fixed" into useable form for plants

• through action of bacteria
• through lightning
• through action of bacteria & lightning
• through photosynthesis

Tags

NGSS.MS-LS2-3

When nitrogen gas is turned in to a form that plants and animals can use is called 

• Combustion
• Photosynthesis
• Decomposition
• Nitrogen Fixation

What forms of nitrogen and carbon can be used by plants?

• ammonia and carbon monoxide
• ammonia, nitrates, and carbon dioxide
• nitrites and carbohydrates
• nitrate and carbon monoxide