Which statements correctly describe the properties of air? check all that apply.

air pressure is created by the weight of the atmosphere pushing on the earths surface

denser air is heavier than less dense air

air is less dense at higher altitudes

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.

"do a testcross with a homozygous recessive plant."