Why are polar bears well adapted to the Arctic environment?, Because they have up to 11 centimetres of fat under their skin, which helps them live in very cold conditions., What does the fat under a polar bear’s skin help it do?, It helps them survive the extreme cold in the Arctic., What might happen if polar bears disappear?, Their disappearance could have far-reaching consequences., What would happen to humans if they had the same level of adipose tissue as polar bears?, Humans would be considered obese and would likely suffer from health problems., What diseases are mentioned in the passage?, Diabetes and heart disease..

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