Answer:
NaF: one atom of sodium, one atom of fluorine
Na2CO3: two atoms of sodium, one atom of carbon, three atoms of oxygen
NH3: the diagram shown
C6H12O6: six gray spheres, twelve white spheres, six red spheres
D. Erasmus Darwin - competition and sexual selection as an impetus for change
Answer:
Option A
Explanation:
In this case, there are two varieties of horses: Domestic horses that are raised and bred by humans and Wild horses that lives in the wild. The issue of varieties in coat colour of domestic horses can be explained as what occured by selective breeding, also known as artificial selection which is a technique by which humans develop new offsprings with desirable and suitable characteristics. These breeders select two parents that possess beneficial phenotypic traits to mate, producing offsprings with those desired traits such as strength and also for coat colour as stated.
Its A
The electron cloud model consisted of a dense nucleus surrounded by a cloud of electrons like a fan. Hope this helps.<span>
</span>
