Which of the following statements is incorrect? (a) All living things require air to breathe. (b) We can feel air but we cannot see it. (c) Moving air makes it possible to fly a kite. Air is present everywhere but not in soil.

• Solution:

(d): Air is present everywhere but not in soil.

Air is omnipresent in nature and is present everywhere including soil. This can be proved by a simple activity.

By taking a lump of dry soil in a beaker or a glass, add water to the soil, we can see that the soil has absorbed the water in the form of bubbles.