Radiation from the sun is the
source of energy for most
communities of organisms
green plants absorb small amounts of light
energy and convert it to chemical energy
during photosynthesis.
Biomass at each stage can be drawn
to scale in a pyramid of biomass
Biomass typically reduces at each stage in
a food chain
materials + energy lost
in organisms' waste
materials
energy transferred to
surroundings for
example through
movement
DECAY PROCESS
living things remove materials from there
environment whilst they live for example
to have energy for growth and movement
These materials are returned to the
environment through waste or
deacay(once dead)
Decay is due to dead animal being broken
down and digested by microorganisms rate
of decay increases with temperature,
moisture levels and AEROBIC CONDITIONS
The decay process releases
substances plants need to grow
a stable community is where the processes that
remove materials are balanced by processes which
return them, materials are constantly cycled