Autotrophs and Heterotrophs
Autotrophs- Produce their own food.
GAIN ENERGY from the sun and making food.
LOSE ENERGY because not all energy is absorbed.
EG. Bacteria or Plants
Heterotrophs-Eat other organisms.
GAIN ENERGY from other organisms.
LOSE ENERGY through movement and respiration.
EG. Fox or cat
Arrows indicate where the energy goes.
Only 10% of energy is passed on to the next stage.
Energy is lost at each stage because of Movement and Faeces.
CALCULATE EFFICIENCY- USEFUL ENERGY OUT/ENERGY IN X 100
Biomass (Living organisms, worms and fungi)
Inorganic materials (rocks)
Water ( helps animals and plants grow)
WATER MASS- wet mass - dry mass
WATER CONTENT% water mass/wet mass x 100%
BIOMASS- wet mass- oven dry mass
BIOMASS%- biomass/wet mass x 100%
Carbon Dioxide + Water -> Glucose + Oxygen
6CO2 + 6H2O -> C6H12O6 + 6O2
Glucose produced is used for energy through respiration, stored as starch.
Any temperature over 30 will decrease the rate of photosynthesis