What are the only things that can change in a valid experiment? A. Control variable and Dependent variable
B. Dependent and Independent Variable
C. Control variable and Range
D. Independent variable and Hypothesis

humans can cause extinction of a species through overharvesting, pollution, habitat destruction, introduction of invasive species (such as new predators and food competitors), overhunting, and other influences. explosive, unsustainable human population growth is an essential cause of the extinction crisis.

explanation:

i didn't have the answer choices , but i tried my best.

i believe the answer is snake.

i think its both a and b