It’s difficult because since it was so long ago in history, Things are often to lose its texture and result in being somewhat mixed in with the environment around the site causing it to become harder to find by professionals who dedicate their life to finding that sorta stuff. Hopefully I helped
Answer:
At the end of the permian period
Explanation:
The Permian–Triassic extinction event, also known as the P–Tr extinction, and as the Great Dying, formed the boundary between the Permian and Triassic geologic periods, as well as between the Paleozoic and Mesozoic eras, approximately 252 million years ago. It is the Earth's most severe known extinction event, with up to 96% of all marine species and 70% of terrestrial vertebrate species becoming extinct. It was the largest known mass extinction of insects. Some 57% of all biological families and 83% of all genera became extinct. Because so much biodiversity was lost, the recovery of land-dwelling life took significantly longer than after any other extinction event, possibly up to 10 million years. Studies in Bear Lake County, near Paris, Idaho, showed a relatively quick rebound in a localized marine ecosystem, taking around 2 million years to recover,suggesting that the impact of the extinction may have been felt less severely in some areas than others.
Herbert hoover. They aren't related & neither is J. Edgar Hoover.
On April 20, 1971, the United States Supreme Court upheld the use of busing to achieve racial desegregation in schools. In 1954, in the case ofBrown v. Board of Education, the Supreme Court ruled that racial segregation of schools was unconstitutional.
Pessy vs ferguson is your answer
