1. What do you mean by natural environment
2. What are sand dunes?
3. Which ones make the bulk of the
atmosphere?
4 What are tides and how are they caused
5. Mention the use of coniferous forest
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Answer:
1) Natural environment is the nature that surrounds us. It contains biotic and abiotic components. They are distinct but affects our life and activities.
2) Sand dunes are the masses of sand which are made by WIND ACTION in desert. The winds carry sand through desert. When velocity of wind becomes less then the sand gets deposited at a place and form sand dunes.
3) Nitrogen (78%) and oxygen (21%) and (1%) carbon dioxide and other gasses make the bulk of the atmosphere.
4) Tides are the periodic rise and fall of sea water and is caused due to gravitational force of the moon. There are 2 types of tides, SPRING TIDES and NEAP tides.
5)The wood of the coniferous forests is used for making pulp, which in turn is used for the manufacturing of paper and also newsprint. Softwood that is found in these forests is used for matchboxes.
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Explanation:
1. What do you mean by natural environment ?
Answer:- The natural environment consists of land, water, air, plants, and animals. Thus, natural environment refers to both biotic (plants and animals) and abiotic (land) conditions that exist on the earth.
2. What are sand dunes?
Answer:- A dune is a mound of sand formed by the wind, usually along the beach or in a desert. Dunes form when wind blows sand into a sheltered area behind an obstacle. Dunes grow as grains of sand accumulate. Every dune has a windward side and a slipface.
3. Which ones make the bulk of the atmosphere
Answer :- Nitrogen (78%) and oxygen (21%) make the bulk of the atmosphere.
4 What are tides and how are they caused
Answer :- Tides are caused by gravitational pull of the moon and the sun. The rise and fall of the tides play an important role in the natural world and can have a marked effect on maritime-related activities. The image aboves shows the NOAA San Francisco Tide Station, in operation for more than 150 years.
5. Mention the use of
coniferous forest
Answer :- The woods of coniferous forest are useful for making pulp, which is used for manufacturing paper and newsprint. Match boxes and packing boxes are also made from softwood. Chir, pine, cedar are the important variety of trees in these forests.
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