Chapter 5 Natural Resources

Question 1

Parts of biosphere? Explain them aswell.

Answer 1

Lithosphere, hydrosphere and atmosphere.

Litho - all living and non living components present on earth.

Hydro - All l and nl present in water.

Atmosphere - all l and nl present in air.

Question 2

What is ecosystem and what are its components? Further classify Biotic.

Answer 2

Ecosystem is the structure and function of nature.

Components - Biotic ( living) and abiotic (non living)

Biotic is further classified into 1 producer 2 consumer 3 decompsers

Question 3

What is renewable and non renewable resources?

Answer 3

Renewable - resources which can be replaced by recycling. Ex - plants, soil.

Non renewable - which cannot be replace by recycling. Ex- Coal, fuel.

Question 4

What are the layers of atmosphere?

Answer 4

1 troposphere - lowest layer, all climatic activities like lighting, clouding etc.

2 stratosphere - ozone layer found in this layer.

3 mesosphere - layer found above stratosphere

4 thermosphere - layer found above mesosphere

Question 5

What is green house effect? And global warming.

Answer 5

The phenomenon of keeping earth warm due to gases like co2 is called green house effect.

Rise in global temperature due to green house effect is called global warming.

Question 6

Write some effects of global warming.

Answer 6

1 rise in sea level.

2 rise in earth’s temperatures

3 melting of ice caps

4 climatic change

Question 7

What is pollution? And what is soil erosion.

Answer 7

Any undesirable change in the atmosphere, soil etc.

Soil erosion - removal of top fertile layer of soil due to agents like water, air etc.