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| Introduction |
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| The Environment influences an organism's life in many ways. It is everything that surrounds an organism and it includes physical and biological components. The physical components of the environment are soil, water, air, light and temperature. These are termed as abiotic components. The biological components are plants and animals, collectively referred to as biotic components. |
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| Air, water, soil, minerals, coal, petroleum, animals and plants are referred to as natural resources. |
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| The growing human population manipulates these natural resources to satisfy its needs. The destruction of forests for agricultural and commercial reasons has upset the ecological balance. |
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