Q. What is eco-system?

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Q. Quartz breaks down into

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Q. The sub layer is known as

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Q. Which layer of soil is the darkest part of the soil profile?

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Q. The gaps between minerals particles are known as

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Q. A soil with what percentage of clay have a clayey texture?

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Q. How are mineral particles formed?

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Q. The type of soil formed under the tropical rain forest is known as

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Q. What are the four basic constituent in soil?

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Q. The ability of soil to supply nutrients to the plants is known as

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Q. The topsoil is made of the decomposition of

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Q. What is rock weathering?

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Q. What measures the soil's acidity?

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Q. What Is the balance of mineral particles in soil?

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Q. Oil palm and rubber provides

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Q. Which logging involves taking only mature hardwoods?

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Q. What is the advantages of selective logging?

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Q. Why commercial logging is less easy in tropical than in temperate forests?

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Q. What is important to make aware the local people about the importance of forests?

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Q. Coniferous forests has low biodiversity than

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