C. directional selection
True
Sorry, I don't know the second one.
Carbon-14 dating is a way of determining the age of certain archeological artifacts of a biological origin up to about 50,000 years old. It is used in dating things such as bone, cloth, wood and plant fibers that were created in the relatively recent past by human activities.
Answer:
A
Explanation:
Photosynthesis transforms light energy into chemical energy stored in glucose, and cellular respiration releases the energy from glucose to build ATP.
It is shaped specifically for a messenger molecule to fit in (like a lock and key) and when the messenger molecule binds to the receptor, it starts a reaction for a cellular process in the cell
Your answer is D. Hope this helps!