Overpopulation can lead to overuse of resources, extreme pollution, war, plague, starvation, and many more serious world problems
A. Become cancer because in the process of mitosis (cell replication) idlf the cell replication does not work properly and keep going on and on it will begin creating mutations to help it replicate causing cancer to happen.
Ex: let's say you have a paper cut. Your blood cells must replicate in order to close that gap in your body. They begin replication but if they get out of control and begin creating mutations it will turn into cancer.
Autotrophes
They make their food through photosynthesis.
Hope this helps.
