Explain why it is more energy efficient for humans to eat crop plants than to eat livestock that have been fed on crop plants
1 AnswerExplain why food chains usually have fewer than five trophic levels
1 AnswerExplain why the transfer of energy from one trophic level to another is inefficient
1 AnswerDescribe food webs as networks of interconnected food chains and construct and interpret them
1 AnswerDescribe the terms producer, consumer, herbivore, carnivore and decomposer
1 AnswerConstruct and interpret simple food chains
1 Answer
1 AnswerExplain why most forms of life are completely dependent on photosynthesis
1 AnswerDescribe that the Sun is the principal source of energy input to most biological systems
1 AnswerDiscuss potential advantages and risks of genetic modification, limited to modifying crop plants and bacteria
1 Answer
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