What is an atom and how does it work : ) pls

ANSWER:

an atom is the smallest particle of anything (matter,gas,liquid...)

is the building blocks of elements or u can say molecules (there the smaller version of molecules atoms bonded together make molecules, molecules bonded together make matter)

~batmans wife dun dun dun...aka ~serenitybella

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

1. is geographic distribution

2 is increasing complexity

3 is transitional forms