last line of defense is the first part.
and the defense is part of her system immunity. this makes sense since the immune system is used to guard against viruses and diseases
We would over populate the eart leading to no water or no food, we would eventually go into a fallout and have nuculer war and then everything is gonna go to sh and we are going to have to repopulate
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).
If your gloves come in contact with a chemical reagent, remove them, wash your hands, and get a new pair immediately.
The answer is B. Genetic drift greatly affects small populations, but large populations can recover.
