Habitats课件.pptVIP

Habitats 精品文档 What is a habitat ? 精品文档 A habitat is the place where living things live. It is more than just a home it includes the whole surrounding area. The habitat provides the animal or plant with food or shelter. 精品文档 People and their habitats People can live all over the world. 精品文档 We can do this because we are able to build homes for different conditions. 精品文档 Also we can change our clothes to best suit the temperature around us. White clothes reflect the heat Animal skin and fur act as insulators and keep heat in. 精品文档 Animals and plants Most plants and animals are specially adapted to survive in a particular habitat. They have developed special features to suit the demands of their environment. This is called adaption. 精品文档 Some examples of adaption 精品文档 All birds have similar characteristics. But many water birds have features that are different from those birds live on land. Long legs are good for wading These wings act as flippers Webbed feet for swimming 精品文档 Some animals are camouflaged to blend in with their surroundings. This keeps them safe as it is more difficult for other animals to see them or catch them for food. This lizards skin is so similar to the rock colour. These zebra could easily be mistaken for bushes from a distance. This lion blends in well with the grassy background. 精品文档 Aquatic animals have streamlined bodies to move more easliy in the water. 精品文档 These animals have adapted to live in the hot climate of the desert. Camels store water in their humps. Ostriches have long eyelashes to keep out the sand. Snakes glide across the hot sands and can shed their skin 精品文档 These animals have adapted to be more suited to cold temperatures. Layers of fat keep the seals body warm, and small ears stop heat loss. Polar bears are kept warm by their body fat. Deer have a warm layer of fur. 精品文档