4.2 flashcards
How does matter move?
It cycles
How does energy move?
It flows
What are the abiotic reservoirs ini the carbon cycle?
The atmosphere, soil, and water
How does carbon enter the food chain in the carbon cycle?
Photosynthesis
How does carbon return to abiotic reservoir?
Cellular respiration
What are examples of carbon sinks?
The ocean, permafrost, forests
What is nitrogen fixation?
Taking nitrogen from the atmosphere and putting it into the soil
What is nitrification?
Converting ammonia into nitrates and nitrites
What is denitrification?
The return of nitrogen to the atmosphere
What are the abiotic reservoirs in the nitrogen cycle?
Atmosphere and soil
How does nitrogen enter the food chain in the nitrogen cycle?
Nitrogen fixation
How does nitrogen return to the atmosphere in the nitrogen cycle?
Denitrification
What are the abiotic reservoirs in the phosphorous cycle?
Soil and rock
How does phosphorous enter the food chain in the phosphorous cycle?
decomposition
