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It has two main branches Botany & Zoology
Botany
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It is the branch of biology which concern with the study of animal life. Animal, multicellular organism that obtains energy by eating food. Animals are multicellular organisms, a characteristic they share with plants and many fungi. But they differ from plants and fungi in several important ways. Foremost among these is the way they obtain energy. Plants obtain energy directly from sunlight through the process of photosynthesis, and they use this energy to build up organic matter from simple raw materials.