Q40 of 75 Page 438

Smog is a combination of:

Smog is formed when the smoke particles combines with the already occurring fog. Fog is nothing but the water droplets suspended in the environment near the earth’s surface.


Smoke and light will cause the scattering of light, while fog and light will have no effect on the formation of smog.

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38

Which of the following is a recently originated problem of environment?

 39

When we breathe in air, nitrogen also goes inside along with oxygen. What is the fate of this nitrogen?

 1

Write true or false for the following statements :

Oxygen is returned to the atmosphere in only one major process, that is, respiration.

 2

Write true or false for the following statements :

The process of nitrogen-fixing is done by bacteria in the presence of oxygen.