WorksheetsEarth's Cycles: Quick Review
Total questions: 15
Worksheet time: 11mins
1. What converts nitrogen gas into a usable form for plants and animals?
rain
bacteria
car exhaust
fungi
How is nitrogen "fixed" into a usable form for plants?
Through action of bacteria only
Through lightning only
Through action of bacteria and lightning
Through photosynthesis
Gas that makes up 78% of our atmosphere.
Oxygen
Nitrogen
Hydrogen
Carbon Dioxide
All of the carbon in existence is continually recycled in the carbon cycle.
True
False
Which of the following removes carbon from the atmosphere?
Combustion
Respiration
Photosynthesis
Death
Organisms that do not decompose can be buried and become what?
water
nitrogen
nutrients
fossil fuels
Which describes the relationship between plants and animals in the carbon cycle?
Plants produce and release oxygen that animals need
Plants produce and release carbon dioxide that animals need
Animals produce and release oxygen that plants need
Animals produce oxygen that plants turn into carbon dioxide
