Cell division means reproduction, and in multicellular organisms it means growth. Cell division is important to replicate new DNA so that you don't die.
The answer is B.
Animals do cellular respiration which requires the intake of oxygen and the output of carbon dioxide. In order for plants to do photosynthesis, they need carbon dioxide to be able to make oxygen for animals to breathe.
The answer is competition. Because it wants the other plants to move so it can have all of the space to grow.
Answer:
Control is a group generall very important in an experiment because it allows you to eliminate and isolate these variables.
