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Questions 31-40
Tardigrades
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more than 1,000 species, 0.05-1.2 millimetres long
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also known as water 'bears' (due to how they 31) and 'moss piglets'
Physical appearance
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a 32 round body and four pairs of legs
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claws or 33 for gripping
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absence of respiratory organs
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body filled with a liquid that carries both 34 and blood
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mouth shaped like a 35 with teeth called stylets
Habitat
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often found at the bottom of a lake or on plants
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very resilient and can exist in very low or high 36
Cryptobiosis
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In dry conditions, they roll into a ball called a 'tun'.
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They stay alive with a much lower metabolism than usual.
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A type of 37 ensures their DNA is not damaged.
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Research is underway to find out how many days they can stay alive in 38
Feeding
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consume liquids, e.g., those found in moss or 39
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may eat other tardigrades
Conservation status
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They are not considered to be 40