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JessMA

unit 3

QuestionAnswer
what are the 4 things organisms need to live? 1)light 2)food 3)oxygen 4)water
what organisms is particularly sensitive to pollution? stonefly larvae
what do we have to tell that dinosaurs and mamoths exsited? fossils
what are the 3 changes that could cause extinction? 1)change in the environmental conditions 2)new species is introduced 3)organism in its food web is reliant on becoming extinct
where does the energy from the ecosystem come from? the sun
what is losed in each stage of a foodweb? energy
how ca you work out how much energy has been losted in each stage? take away the energy from the previuos stage from the enery in the next stage
Created by: 08lwjl
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