Identity the dependent and independent variables on the following scenario A researcher is studying the effect of sleep on academie performance, thinking that less sleep will lead to lower grades. She has some
people sleep six hours per night, some people sleep three hours per night, and some people sleep as much as they want She then monitors
academie behavior during English and math classes among participants (Site 1)

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 it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.