Question 3
What are the raw materials that are obtained by an organism externally?

Various raw materials obtained by an organism externally are as follows:

1. Food as an energy source.
2. Oxygen for the breakdown of food to obtain energy.
3. Water for proper digestion of food and keeping the cellular metabolism of the body going.

The raw materials required by an organism varies depending on the complexity of the organism and the environment that it lives in.