Scientists most often produce new genetic variations of organisms by causing mutations with radiation or chemicals and then selectively breeding in order to emphasize the desired traits in the new variations. The Dachshund is an example of this. By breeding two dogs with a similar mutation that caused student legs and elongated backs breeders were able to create a new variation not found in nature.
The answer is d. atmosphere < leaves < roots < soil
Great Human minds that are driven by a passion to push forward have revolutionized the technology industry. People wanting to always see more and feel more drive development.
B is the answer to this question. Hope this helps.
