Answer:
The Quantum Model of the Atom 1927
Explanation:
It is the most accurate model of the atom but I don't know about the easiest to visualise. Soz :(
1.) everything that can be observed or explained scientifically. - natural phenomenon
2.) a well-supported explanation of all the evidence related to a natural phenomenon. - Theory
3.) the procedure of scientific inquiry used to investigate natural phenomena. -scientific method
Answer:
<em>Only one process involves sperm and eggs</em>