B17- organising an ecosystem Flashcards
1
Q
why are photosynthetic organisms producers
A
they produce most of the biomass for life on earth
2
Q
what is the carbon cycle
A
the constant cycling of carbon between living things and the environment
3
Q
in what way is carbon returned to the atmosphere as carbon dioxide
A
the decay of dead plants and animals by microorganisms
4
Q
how does temperature affect rate of decay
A
chemical reactions in microorganisms work faster in warm conditions however if it gets too hot enzymes will denature
5
Q
how does moisture affect rate of decay
A
microorganisms grow faster in moist conditions as it prevents them drying out and makes them digest food faster
6
Q
how does oxygen affect rate of decay
A
most decomposers respire aerobically so decay is faster in aerobic conditions
