The anwser is true. Exposure to ultraviolet rays can cause skin cells to produce melanin which darkens the surface of your skin into a suntan.
<span>C) Bacterial genes are organized into operons, clusters of coregulated genes, that are regulated such that they are all turned on or off together. </span>
The answer is skeleton.
Please correct me if I'm wrong!! :)
Answer:
Scientists have found fossils of whales and other marine animals in ... When these animals died from 15 million to 20 million years ago, their ... In geological terms, the time the fossils took to rise from ocean floor to mountain top was ... In more recent sediments, the group found species related to modern .
Explanation:
