Which vitamin to form connective tissue and matrix for bones and teeth and assist in wound healing?

What is a group of organisms that are closely related and share similar characteristics

Where does the information about where each transcription factor binds originate?

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere