Dolphins have similarities to fish because they live in the same habitat. What type of relation is this?
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Card 7
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What are organisms produced when members of two species interbreed called?
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Card 8
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What characteristic means that hybrids cannot be classed as a species?
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Card 9
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Organisms may have different features if they live in different ........?
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Card 10
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What can be used to see how similar organisms are and help to reclassify them that was not available 60 years ago?
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Card 11
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Pyramids of biomass show the ..... ..... of living material at each stage of a food chain.
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Card 12
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Pyramids of biomass may look different to pyramids of numbers if .......... are very large.
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Card 13
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What organism that feeds of another living organism could also affect how pyramids of biomass look compared to pyramids of numbers?
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Card 14
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As energy flows along a food chain some is used in growth. Most of the energy, however, is transferred into less useful forms such as heat from ...........
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Card 15
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The material that is lost at each stage of the food chain is not wasted. Most of the waste is used by ............
