The domestication of plants and subsequent breeding has given rise to many different familiar crops. The single species of Brassica oleracea has given us many different vegetables including: kale; cabbage; broccoli; cauliflower; kai-lan; brussels sprouts and kohlrabi. Even though these are all the same species, this is possible because of .

the dark variety, as they are not visible on the dark tree barks

explanation:

this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.