What statement best explains an effect of the economic crash of 1929? The number of immigrants dropped as economic opportunities disappeared.
Government tax policies were amended to increase revenue to pay for public
services.
Factories were forced to retool and refurbish in order to meet changing
economic conditions.
Many banks failed because too many depositors attempted to withdraw their
savings.

As you drive in to school, you hear a random radio-show caller arguing that sun exposure really has not been shown to cause skin cancer and that some research suggests that skin cancer is completely genetic and not related to sun exposure at all. at the time, you think that this is a silly argument and that the caller does not know what she is talking about. however, two months later, you are outside without wearing sunscreen, and you find yourself remembering that you had read something about how the sun actually does not cause skin cancer. this process is evidence that has influenced your attitude