Question

State reason for the following statements:
(i) Fertile soil has lot of humus. .
(ii) Dust is a pollutant.
(iii) People love to fly kites near the sea shore.​

Answer 1

Explanation:

i)Fertile soil has lots of humus because it contains microorganisms that decompose dead organic matter present in soil and help in the formation of humus. Humus is a sources of mineral, absorbs water and makes the soil porous for easy passage of plant roots

ii)Dust is a pollutant because (i) Dust consists of suspended particles. Inhalation of dust causes lots of discomfort including allergic asthma, bronchitis, cold or cough. (ii) It reduces intensity of light. (iii) Dust particles settle over leaf and can block stomata and reduce gaseous exchange in plants

iii)In sea shore or coastal regions, during the day, the air above the land gets heated faster and starts rising. As this air rises, a region of low pressure is created and air over the sea moves into this area of low pressure.

hope this helps u

Answer 2

Answer:

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State reason for the following statements:

(i) Fertile soil has lot of humus. .

(ii) Dust is a pollutant.

(iii) People love to fly kites near the sea shore.​

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Explanation:

1. Fertile soil possess lots of humus because (i) Humus is required for binding soil particles into crumbs. Crumbs formation is needed for both hydration and aeration of soil.

(ii) Humus makes the soil porous for easy passage of roots.

(iii) It is source of minerals.

(iv) Humus contains chemicals that promote growth of plants.

2.Dust is a pollutant because

(i) Dust consists of suspended particles. Inhalation of dust causes lots of discomfort including allergic asthma, bronchitis, cold or cough.

(ii) It reduces intensity of light.

(iii) Dust particles settle over leaf and can block stomata and reduce gaseous exchange in plants.

3. (i) There is a regular unid irectional wind from sea to land.

(ii) It helps in flying the kite high.

(iii) The wind is cooler and provides comfort even in bright sun.