What happens when 2 or moreatoms bond together? a. the substance is not pure. b. a mixture is made. c. a new, pure substance is made.

Common symptoms of an iron-defiency anemia include muscle weakness shortness of breath and lightheadedness why does iron deficiency causes these symptoms

How does secondary succession differ from primary succession?

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