There is a very narrow zone on Earth where land, water and air come in contact with each other. This is called biosphere. All the living things such as plants, animals, and human being exist only in this zone (the biosphere). So biosphere is of great significance for all of us.
There are ten lakh species of animals in the animal kingdom. It includes microscopic organisms to large animals like the elephant and the whale fish.
The organisms in the animal kingdom move from one place to the other. Three lakh species of plants are found in the plant kingdom. It includes microscopic algae to large trees.
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