All living entities require energy to sustain and maintain life. Plants and animals slightly differ in their raw material intake for survival.
- The raw materials required by an organism will vary depending on the complexity of the organism and its environment.
- All animals take in food, water and oxygen as raw material from the outside
- As for plants, they take in carbon dioxide, water and sunlight to synthesize their own food in the presence of chlorophyll(found in green plants).
Various outside raw materials used by an organism are as follows:
a. Food as source of energy.
b. Oxygen for the breakdown of food to obtain energy.
c. Water for proper digestion of food and other functions inside the body.