Musculoskeletal system and <span>Respiratory system.</span>
The answer is D) denser plates slide under lighter plates
Answer:
1
Explanation:
At sea level, about 1 kilogram of air presses down on each square centimeter of surface
<span>A gene is a sequence of DNA or RNA which codes for a molecule that has a function</span>
Genetic variation<span> can be caused by mutation (which can create entirely new alleles in a </span>population<span>), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).</span>
