The functional group can always be found in a carbohydrate molecule.

a. phosphate

b. hydroxyl

c. amino

d. water

Hello There!

YOUR ANSWER IS "B"

The hydroxyl functional group can always be found in a carbohydrate molecule.

i'd say that the moon rock is about 2.2 billion years old.

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.