It is either carcinogens or viruses (I think the first) I hope this helps!
The enzyme that makes RNA knows where to start transcribing the DNA by knowing where to start transcribing at the promoter site. For example,<span> TATA Box in Eukaryotes. Hope this answers the question. Have a nice day. Feel free to ask more questions.</span>
Since all thoroughbreds have the same birthday — January 1 — the best bet for a racing horse is to raise so that the foal drops right after that date. This means the yearling at his first birthday is a five-year-old and from then on he is ahead of the game with a five year of maturation before each.
Answer is Middle Paleozoic era.
Paleozoic era was in 542 Ma - 245 Ma and it has 6 periods as Cambrian, Ordovician, Silurian, Devonian, Carboniferous and Permian.
360-280 Ma - forming of vascular plants with woody tissues, seeds and veins.
430 - 410 Ma - forming of jawed fishes and first amphibians.
420 Ma - forming of scorpions
360 Ma - forming of crustaceans.