What is the name of the gas, name given by Lavoisier, involved in the combustion of matter? Group of answer choices

Hydrogen

Air

Phlogiston

Oxygen

The model illustrates a process by which a substance is taken up by a cell

Which of the following is a common response to cell signaling?

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of