Food chains, biomass and energy
- Created by: JessicaGrey
- Created on: 09-04-16 12:13
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- Food Chains, Biomass and Energy
- Producers/ green plants make their own food (photosynthesis)
- Absorb light energy from the sun and transfer it to chemical energy.
- This energy is stored in the substances that make up the cells of the plants
- Absorb light energy from the sun and transfer it to chemical energy.
- Biomass decreases at each stage of the food chain
- Pyramid of biomass will always be pyramid shape
- Biomass decreases because energy is lost at each stage eg as waste materials(faeces and urine) and through respiration
- energy released by respiration is used for movement and other life processes, and is eventually lost as heat to the surroundings
- Decay- microorganisms break down (digest) materials
- Occurs best in moist, warm and aerobic conditions- microorganisms are fastest
- Living things remove materials from the environment
for growth and other processes
- This is returned to the environment as waste materials or when they die
- In a stable community, the processes that remove materials are balanced by processes that return materials. The materials are constantly cycled.
- Producers/ green plants make their own food (photosynthesis)
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