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- 1. Multiple Choice
In the carbon cycle, producers take in the gas __carbon dioxideoxygennitrogencarbon monoxide - 2. Multiple ChoiceHow do living organisms return carbon to the atmosphere in the carbon cycle?respiration and photosynthesisdecomposition and respiration
- 3. Multiple ChoiceWhen nitrogen gas is turned in to a form that plants and animals can use is calledCombustionPhotosynthesisDecompositionNitrogen Fixation
- 4. Multiple ChoiceHow do animals get nitrogen?the atmosphereeating other organismsbacterialightning
- 5. Multiple ChoiceWhat converts nitrogen into a useable form for plants and animals?bacteriafungirain
- 6. Multiple ChoiceIdentify the cycle pictured.The Water cycleThe Carbon cycleThe Nitrogen cycleThe Phosphorus cycle
- 7. Multiple ChoiceIdentify the cycle pictured.The Water cycleThe Carbon cycleThe Nitrogen cycleThe Phosphorus cycle
- 8. Multiple ChoiceIdentify the cycle pictured.The Water cycleThe Carbon cycleThe Nitrogen cycleThe Phosphorus cycle.
- 9. Multiple ChoiceThis is released by the weathering of rocks.CarbonOxygenPhosphorusNitrogen
- 10. Multiple ChoiceWhich nutrient is not cycled through the atmosphere and stays only on ground level?carbonnitrogenphosphoruswater
- 11. Multiple Choice
A correct path that nitrogen could take would be
air -> animals -> plants -> bacteria
animals -> air -> bacteria -> plants
bacteria -> air -> plants -> animals
air -> bacteria -> plants -> animals
- 12. Multiple ChoiceHow much of the atmosphere is composed of nitrogen gas?87%38%78%21%
- 13. Multiple ChoiceHow does carbon dioxide leave the atmosphere and become part of the food chain?Through transpirationThrough photosynthesisThrough factory emissionSunlight
- 14. Multiple ChoiceWhat role do animals play in the carbon cycle?absorb carbon dioxide from the atmospheregive off carbon dioxide through respirationcombustiondecomposing matter
- 15. Multiple ChoiceHow does nitrogen become part of the food chain?Through transpiration by plantsThrough uptake of nitrogen compounds in the soil by plantsThrough factory emission and combustion of fossil fuelsSunlight changes nitrogen into usable forms
- 16. Multiple ChoiceWhere 97% of Earth's water is stored?GlacierspHGroundwaterSea water
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