The organelle that is responsible for regulating what enters and leaves the cell is A.
Answer:
d. BB
Explanation: The only possible phenotype would be BB because if you draw a Punnett square you see that you get BB, BB, BB, and BB so that is the only posssible genotype.
CO2 is returned to the atmosphere by all methods except photosynthesis.
Through photosynthesis, a plant actually takes CO2 from the atmosphere and produces oxygen in return.
The answer is D. A cold tundra
