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Food chains and cycles
What is biomass?
The amount of energy in an ecosystem.
The number of animals in a habitat.
The amount of living material.
Which one of these organisms is a producer?
Where does the energy in a food chain usually originally come from?
What happens to the amount of energy as it is transferred from one stage to the next in a food chain?
It stays the same.
The efficiency of food production can be improved by:
Letting animals run around outside.
Farming animals instead of cereals.
Keeping animals in warm cages.
What processes are shown by the letters A, B and C?
A is photosynthesis, B is respiration and C is decay.
A is respiration, B is photosynthesis, and C is decay.
A is decay, B is photosynthesis, and C is respiration.
Decay happens faster when the conditions are:
Warm and dry.
Cold and moist.
Warm and moist.