B17- organising an ecosystem Flashcards Preview

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

why are photosynthetic organisms producers

they produce most of the biomass for life on earth


what is the carbon cycle

the constant cycling of carbon between living things and the environment


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

the decay of dead plants and animals by microorganisms


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


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


how does oxygen affect rate of decay

most decomposers respire aerobically so decay is faster in aerobic conditions