The answer to this question would be D (DNA). It can be found in the nucleus of a cell and contains the entire genetic information of a whole.
They need approximately 70 grams of protein in their diet
False, atomic mass is the weighted average mass of an atom of an element based on the relative natural abundance of that element's isotopes
C. The brain sends messages to the spinal cord
Answer: See below
Explanation:
There should be another answer that can be chosen: the rat’s chemical receptors detect chemicals in the fruit that alert the rat to possible danger. Sensory receptors in the rat's whiskers respond to input about the texture of the fruit, maybe it's slimy or rancid, if if it was another factor such as the environment, it wouldn't have approached the fruit in the first place.