B17- organising an ecosystem Flashcards Preview

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Flashcards in B17- organising an ecosystem Deck (6):
1

why are photosynthetic organisms producers

they produce most of the biomass for life on earth

2

what is the carbon cycle

the constant cycling of carbon between living things and the environment

3

in what way is carbon returned to the atmosphere as carbon dioxide

the decay of dead plants and animals by microorganisms

4

how does temperature affect rate of decay

chemical reactions in microorganisms work faster in warm conditions however if it gets too hot enzymes will denature

5

how does moisture affect rate of decay

microorganisms grow faster in moist conditions as it prevents them drying out and makes them digest food faster

6

how does oxygen affect rate of decay

most decomposers respire aerobically so decay is faster in aerobic conditions