When a counterfeit detection pen is used on an authentic bill, what color does it turn?

Which organelles are involved in energy conversion

What are charcteristics of lithosphere?

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