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The higher up the food chain you travel, the greater the amount of toxins accumulate, so the top carnivore of the food chain can have a very large, sometimes fatal, dose.

Choose 1 answer

True

False

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Which of these animals are at the top of their food chain?

Choose 3 answers

killer whale

tiger

great white shark

salmon

frog

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What is DDT used for?

Choose 2 answers

To slow the spread of some diseases

To stop fungi growing on crops

To stop insects eating crops

To help crops grow larger fruits

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What is bioaccumulation?

Choose 1 answer

The decrease of material in an ecosystem

The build up of animals and plants in an area of an ecosystem

The increased concentration of chemicals in an ecosystem

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Answer incorrect

Look at the slide below to work out the answer.