Life on the earth

Life on the earth is possible due to the sun, air and water.

Habitat

The place where the living things dwell is called their habitat. The sun is the biggest source of light and heat on the Earth.

Plants need light and heat to grow. There are many kinds of plants. We get fruit, vegetables and grains from them. Some animals survive by eating these plants whereas some animals prey upon the other animals and live on their flesh. For example, a deer (stag) eats plants and the lion eats the flesh of a deer. In addition to the vegetables and grains, the man also eats flesh of animals. Life is not possible on the earth without sun. If there were no sun, there would be no light and heat. Plants will not grow and animals will not be able to get food.

Life on the earth

Wildlife: Animals Living in the Forest

Wild animals live in jungles, deserts or in the water, just as human beings live in villages and cities. The areas of the earth where trees and plants grow in large number are called forests.

Wild life

Wildlife includes deer, zebra, rabbits, lions, tigers, leopards, wolves, etc. Deer, zebra and rabbits eat grass, weeds and leaves of the plants. Lions, tigers and wolves eat flesh of the animals.

Life on the earth

Living Things Found in Desert

Part of the Earth where there is sandy soil, shortage of water and vegetation is called desert. It receives little rainfall.

Only such animals and plants which can live on the small amount of water can survive here. Days are extremely hot and nights are very cold in the desert.

Desert life

Rats, snakes, scorpions and camels are desert animals.

The camel can live without water for several days.

Moreover, it can easily walk on the sand due to its flat feet.

Cactus plant grows in desert.

This plant has thick stem which stores water. Its bark is also thick so that stored water remains safe.

Life on the earth

Aquatic life

Living Things Found in Water

Water is a habitat of many animals and plants. For example, frog, fish, dolphin and fungus live in water. Hippopotamus also lives in water.

The animals that live in water breathe either through lungs or through gills. Fish can swim in water due to fins. Shark lives in the sea. It eats small fishes.

Many kinds of plants also grow in water. For example, seaweeds, fungi, algae, etc.

Life on the earth

Animals of the Snowy Regions

Some parts of the Earth remain covered with snow throughout the year. The plants and animals found in these areas can survive in extreme cold weather. Thick skin and thick fur on the bodies of the polar bear, seal and wolf protect them from extreme cold. The special structure of their feet helps them to move on the ice.

Penguins are birds that live in snowy regions. To keep themselves warm in the extreme cold weather, they live together in groups.