What is scientific name of rose

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

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

How does a catalyst influence a chemical reaction?