An adaptation is a trait that helps an organism. A fight better
B. overproduce variations
C survive and reproduce
D larger and stronger

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

Speed is the ratio of the distance of an object moves to

Creating new things to solve problems and improve life depends on the close interaction of which two fields?