CHAPTER - 17Forests Our lifeline

National Council of Educational Research and Training (NCERT) Book Solutions for Class 7th
Subject: Science
Chapter: Chapter 17 – Forests Our Lifeline

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Forest is a main reason for the india to be a developing country. We use many things in our everyday life. Those all things are made up of forest materials. We all eat different kinds of foods. The things that are required to make a food is given by the forests. Forest provide kitchen products, industrial products, and ofcourse, our survival is due to the forests. It provides different kinds of fruits, vegetables, oil, etc. It provides timber, rubber, wood for fuel, grass for fodder,and fruits for consumption. It also provides paper and other commodities for industrial purposes. Trees plays a major role in the process of respiration. The trees release oxygen which we inhale for breathing. On the other hand, The trees inhale carbon dioxide which we exhale for the same process. Thus trees plays a major role in our survival. Nowadays, Forests are slowly decreasing due to afforestation. If forests are destroyed fully, then there would be no foods, oils and any other products from the forest. The trees absorbs the heat from the sunlight. If the trees are destroyed then the heat would be more on the earth. Main drawback is we cannot survive without the release of oxygen by the trees in forest. Thus, we should not cut the forest. Instead we can afforestate in the deforestated area. 'Go green Breathe clean' is the saying that we should keep in mind. We should conserve forest. The earlier Vanmahotsava movement helped in conservation of forest. Thus Forest are our lifeline.

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We have to conserve forests. Some ways in which we can conserve forests are afforestation, planned cultivations, preventing illegal logging overgrasing and protection from forest fires. It is clear that forests are our lifeline. They are referred to as the ‘lungs’ of the Earth. So, let’s protect forests!

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National Council of Educational Research and Training (NCERT) Book Solutions for Class 7th
Subject: Science
Chapter: Chapter 17 – Forests Our Lifeline

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Solutions for Class 7th Science Chapter 17 – Forests Our Lifeline

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Class _ 7 _ Science _ Forest Our Lifeline

Class 7th Science Chapter 17 Forests Our Lifeline NCERT Solution is given below.
Question 1: Explain how animals dwelling in the forest help it grow and regenerate.
Answer: The animals in forests are of various types. These could be herbivores, carnivores, micro-organisms, etc. These play an important role in maintaining the food chains.
(i) Micro-organisms convert the dead plants and animals to humus. This humus helps in returning the nutrients back to the soil. These are absorbed by plants.
(ii) The animals also help in dispersing the seeds of certain plants.
(iii) The decaying animal dung provides nutrients to various types of seedlings to grow.
All these activities of animals dwelling in the forest help it to grow and regenerate.