Pros: Introduced in 1981, aspartame is one of the most studied sweeteners on the market. Despite the rumors, thereâs no conclusive evidence of a link between aspartame and cancer, according to the FDA and American Cancer Society.
Mammals appeared on the earth long before the extinction of the dinosaurs; in fact, dinosaurs and mammals originated within 10 million years of each other, in the late Triassic about 200 million years ago.
Dinosaurs 1st appeared in the fossil record about 230 million years ago during the middle to late triassic period.he first plants with spores, which indicates that they were land  plants, appeared in the Middle Ordovician period, about 470 million  years ago. First records of tetrapods â¦ , or land animals, show up in  the fossil record around 370 million years ago. 2 people found this useful.