4. Give reasons.
(i) Man modifies his environment
(ii) Plants and animals depend on each other
Answers
a) Man modifies his environment to fulfil his needs and make his life comfortable. He also has modified his environment to adapt himself to the natural surroundings.
(b) Plants and animals depend on each other for their own sake. Plants release oxygen that animals breathe and absorb carbon dioxide that animals release.
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Answer:
(i) For thousands of years, humans have modified the physical environment by clearing land for agriculture or damming streams to store and divert water. As we industrialized, we built factories and power plants. While these modifications directly impact the local environment, they also impact environments farther away due to the interconnectivity of Earth’s systems. For example, when a dam is built, less water flows downstream. This impacts the communities and wildlife located downstream who might depend on that water.
(ii) Plants and animals depend upon each other as mutual interdependence is must for their survival. Plants provide shelter for animals and they make oxygen for the animals to live. When animals die they decompose and become natural fertilizer plants. Plants depend on animals for nutrients, pollination and seed dispersal.
Explanation:
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