Every population has a limit!

Every species does not have unlimited amount of resources or room. 7 billion people live on earth and it is growing by the minute.  Now in China each family can only have one child. Why? Because there is NOT enough room to have so many people in China.  We played a game in school called shark tank. How to play is there are minnows, seaweed, and Sharks. The minnows had to eat 1  seaweed to survive, 2 to have a baby, the shark had to eat 2 minnows to survive, 4 to have a baby, and  if seaweed  didn’t get eaten they multiplied. But if any population got too big everyone died in the long run. This connects because if one species got to big and took up too much room or took too many resources everyone would die in the long run.