Question

, which is an essential biological compound found in dna and amino acids that make up proteins, occurs in the atmosphere in an unusable form. this element must undergo the process of , which is facilitated by bacteria in the roots of plants. a.) nitrogen; transpiration b.) hydrogen; transpiration c.) nitrogen; fixation d.) hydrogen; photosynthesis

Explanation:

Nitrogen is in DNA and amino - acids. It's in an unusable form in the atmosphere and is converted to a usable form by nitrogen - fixing bacteria in plant roots through the process of nitrogen fixation. Transpiration is the loss of water from plants, and photosynthesis is the process by which plants make food using light, carbon - dioxide and water.

Answer:

c. Nitrogen; fixation