In the early 1930s, why did so many farmers lose their land?

The correct answer is:  

They could not earn enough from farming to pay their mortgages.

During the Great Depression, farm foreclosures became a rising problem. Within 1929 and 1933, the third part of American farmers lost their farms. They were in deep debt, some holding a mortgage and others requiring credit to maintain production. The declining crop prices made it imposible for them to pay off their mortgage loans.

name two ways organisms join a population and two ways organisms leave a population. two ways organisms join a population are birth rate and immigration. two ways they leave are death rate and emigration.

explanation:

bye cutting off more workers so the graph can go back up