Answer:
(For USATestprep) C. The rate of photosynthesis increases with an increase in carbon dioxide.
Explanation:
Carbon dioxide is one of the reactants in the process of photosynthesis. The rate of photosynthesis increases with an increase in carbon dioxide.. If carbon dioxide is limited, then photosynthesis would slow down.
(Answer and explanation from USATestprep)
The Embryonic stem cells are capable of limited differentiation.
I believe the answer is B.
For the first question, the age of each strip of rock is needed to determine the rate of seafloor spreading. The answer is B.
For the second question, the answer is A.