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Animals adapt to their environment in different ways. Some change their appearance, for example arctic foxes, which become white in the winter. Others, such as cobras, produce substances like venom, to help them feed.However, some animals adapt in a different way – they

travel thousands of miles to a different habitat. This is called migration. Animals migrate for different reasons. Some, such as salmon, travel from the ocean to rivers to breed, because it’s safer for their young there. Others, such as monarch butterflies,

migrate south to spend the winter in a warmer habitat. Migration is one of the most amazing phenomena in the animal kingdom.​

Arctic Fox Adaptations:

Relatively low surface area to volume ratio (anatomical) - Compared to other species of fox, arctic foxes have proportionally shorter legs, shorter necks and smaller ears. This means that there is less surface area to lose heat from compared to more slender southern foxes.

Thick camouflaged seasonal fur (anatomical) - The coat of the arctic fox is always thick and highly insulating. They grow two rather distinct versions over the course of a year however. The summer coat is thinner and dark grey to a brown, the colour allowing it to be camouflaged against the darker background of rock and vegetation when the ice and snow of winter have melted. The luxurious winter coat is very thick making the fox look more rounded and is white so camouflaging it against a frozen background.

Crabeater sealsThick fur on the tail (anatomical) - The tail acts to provide extra insulation when it is needed. When the fox is active and generating heat it is out of the way, while when the fox curls up to sleep or to keep warm in extreme cold, the tail fur can brought into play for extra wrap around insulation.

В) транспортування газів та поживних речовин до організму

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