After completing 10 years of experimentation, a scientist reports a new scientific theory explaining the movement of sand on beaches. how do you know that this information is valid?
there were too few years of data,
the initial hypothesis was incorrect.
the problem was not important enough
theories develop through repeated experimentation

gametes or germ cells are haploid cells (example: sperm and ova) containing only one set (or n) number of chromosomes and autosomal or somatic cells are diploid cells containing 2n number of chromosomes.

i don't know, but does anyone wanna be friends? i'm doing my homework at 1: 49 in the morning : /

most community's take hundreds of years to become stable