Amixture is a combination of two or more substances in which each substance retains its individual characteristics

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

Produce proteins by following coded instructions that come from the nucleus of the cell.

Several bodily responses are described below. for each response, determine what caused the change in homeostasis. body starts to sweat breathing rate increases amount of saliva produced changes body starts to shiver