Question

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100 point please answer

बेस्ट आंसर मार्क एस ब्रेन लिस्ट ​

Answer 1

Ans1:

Soil is considered Ann important resource because it gives us land for cultivation, shelter, forests, etc. It is base of the biosphere.

Ans2:

Three causes of soil erosion are:-

(i) deforestation

(ii) floods

(iii) drain blockages

Ans3:

Please check the attachment for diagram. The water cycle, also known as the hydrologic cycle or the hydrological cycle, describes the continuous movement of water on, above and below the surface of the Earth. Here water evaporates from the oceans due to the heat of the sun and condenses to form clouds. After this the water vapour condenses due to low temperature and become clouds. The comes down to the Earth's surface through rain, hail, ice fall, etc. and is called precipitation. The water may seep into the ground and be called as ground water whereas some of the rainwater finds its way back into the ocean through rivers.

Ans4:

River water gets polluted when we release our wastes into the water bodies. When release our sewage, water from toilets and kitchens, when we throw our wastes into water. This is a major water problem we have been facing. We must not throw waste products in the water bodies. We must keep them clean.

Ans5:

(i) When we build dams we are stoping the river water from flowing. This causes changes in our ecosystem.

(ii) It leads some animals to extinct.

(iii) It also leads to difficulties of many living organisms to survive in the new environment.

Answer 2

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