The atomic mass of an element whose atoms consist of seven protons, eight neutrons, and seven electrons is

What came first egg or chicken? and is tomato a vegetable or a fruit?

All living organisms are composed of a. only one cell. b. at least 100 cells. c. at least three cells. d. one or more cells.

Plz ! for many generations farmers in north america have been choosing to cross corn plants with large ears of corn each year this results in the new generation of plants also growing large ears of corn. what is the technique called? a. selective breeding. b. natural selection. c. mitosis. d. asexual budding.