Biogeochemical Cycles

In the carbon cycle, producers take in the gas __

• carbon dioxide
• oxygen
• nitrogen
• carbon monoxide

All of the carbon in existence is continually recycled in the carbon cycle

• True
• False

Tags

NGSS.HS-ESS2-6

NGSS.HS-LS2-5

If the plant population decreased, the amount of carbon would _________.

• Stay the same
• Increase
• Decrease

Tags

NGSS.HS-LS2-5

Carbon can be found in...?

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

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

• The lion eats the grass
• Carbon from grass doesn't end up in a lion. 
• The carbon ends up in the food the lion eats. 
• The lion breathes in carbon given out by the plant

In the food web, which organisms release the carbon from dead things back into the environment?

• Producers
• Consumers
• Scavengers
• Decomposers

Deforestation contributes to greenhouse gases by

• loss of trees that would otherwise remove carbon dioxide from the air
• as trees are cut, they release carbon dioxide
• increasing the amount of oxygen in the air

Which of these is an example of precipitation?

• snow
• air
• clouds
• vapor

What follows evaporation during the water cycle? How does this occur?

• Water evaporates into water vapor
• Water vapor condenses and forms a  cloud
• Water precipitates to the ground
• Water runs down into the hydrosphere

What is it called when plants give off water vapor as a waste product?

• condensation
• evaporation
• sublimation
• transpiration