Question

1what is the barter system?
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2explain what is meant by hydrosphere and atmosphere?

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3.List few ways in which you can protect environment?

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Answer 1

Answer:

1.A barter system is a method of exchange that traces back in history. This method of bartering was used before the invention of money; goods and services were traded for other goods and services. However, bartering is not just a concept of the past.

3.Cut down on what you throw away.

Volunteer. Volunteer for cleanups in your community.

Educate.

Conserve water.

Choose sustainable.

Shop wisely.

Use long-lasting light bulbs.

Plant a tree.

2.Hydrosphere. All of the Earth's water, including surface water (water in oceans, lakes, and rivers), groundwater (water in soil and beneath the Earth's surface), snowcover, ice, and water in the atmosphere, including water vapor. Compare Asthenosphe.

3.

Answer 2

Answer:

1.Old meathod of exchange of goods

2.Hydrosphere- Amount of water that is present on land.

Atmosphere- Layer of gases present on earth.

3. - use 3R principle, reduce, reuse and recycle.

-Conserving water.

-By planting more and more trees.

- don't throw plastics here and there.