Which statement best illustrates why carbon is so important to living things? a)carbon occurs as a solid, a liquid, and a gas. b)carbon is found in both the living and nonliving worlds. c)carbon is stored in large quantities in fossil fuels. d)carbon-based macromolecules are found in all life forms.

D) Carbon-based macromolecules are found in all life forms.

Explanation:

The carbon is the key element that is present in various macromolecules which are necessary for growth and development of the organisms. The four main types of carbon based molecules are carbohydrates, proteins, nucleic acids and lipids. These are necessary for building up the body mass, transfer of genetic information from parents to offsprings, development of cell membrane and other physiological and anatomical functions.

c

explanation:

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