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Card 6

Front

What is the exoskeleton of an insect?

Back

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Card 7

Front

What did this mean?

Back

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Card 8

Front

What do they exchange?

Back

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Card 9

Front

What do they use a system of?

Back

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Card 10

Front

What do the tracheae do?

Back

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Card 11

Front

What do the spiracles do?

Back

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Card 12

Front

What are the walls of the tracheal tubes stiffened with?

Back

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Card 13

Front

What do the tracheae branch out/ lead to?

Back

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Card 14

Front

what is every cell in insects body close to/ adjacent to?

Back

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Card 15

Front

What is there a limit to?

Back

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