Which of the following is true about radio waves?

a. they can penetrate dust clouds
b. they reveal hot gases
c. they have short wavelengths
d. they have high energies.

eukarya because is is like alche and b is bacteria and d is animals

explanation:

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).