Since, it is known that plants and animals living in soil and water require also oxygen to survive , therefore it must be present there.

Activity to show that Air is contained in Water

  1. Take some water in a container.
  2. Heat the water.
  3. Before the water begins to boil we see tiny bubbles in the container.
  4. These bubbles have air dissolved in water.

Note - Air dissolved in water helps aquatic animals like fish to breathe.


Activity to show that Soil is contained in Water

  1. Take some lump of soil in a beaker.
  2. Add Water.
  3. We see bubbles coming out of soil.
  4. This indicates the presence of air in the soil.

Note- This air helps the animals living in the soil to breathe. 

For Example - Earthworms.

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Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 13 years and a teacher from the past 17 years. He teaches Science, Economics, Accounting and English at Teachoo