Which step in the water cycle involves matter changing form?
a. infiltration
b. groundwater
c. condensation
d. surface runoff

How are mutations continually being generated in a population (what are some of the causes of mutatuions? ) explain

Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?

Several billion years ago which gas was the least prevailant in the atmosphere