3. Plants have properties that make them practical source of foods. Which property make them good source of foods?
A, resistance
B, mechanical C. chemical
D. physical

C

Explanation:

The property of plants that makes them a good source of food is the chemical property.

Plant lock-up energy in them in the form of carbohydrate which is derived from the process of photosynthesis. The energy from the sun is converted into chemical energy and when plant-consuming organisms feed on them, the chemical is broken down and the energy is released for the metabolic activities of the body.

These two processes can be expressed as equations:

1.

2.

The correct option here is C.

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this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.