I think A is the youngest layer, because of the new sediments that fell upon the animal.
B - 17
The atomic number always matches the number of protons, or 17 p as listed in the image.
Hope this helps!
Answer:
The correct answer is D. reactant.In any reaction (enzymatic or non-enzymatic), reactants are mentioned on the left hand side of the arrow while products are mentioned on the right hand side of the arrow.Enzyme name is usually mentioned above the arrow. Examples are shown in the figure.
Explanation:
<em><u>VERIFIED ANSWER</u></em>
Valves, they are like flaps of muscle that keeps the blood in its place util its ready to be pumped along.
