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.
Im not completely sure but I think its B: great forests in North Africa were destroyed. My reason for this decision is that they probably destroyed the great forests for agriculturable land.
Hope this helps!
Answer:
Correct Answer:
<em>The impeachment of Johnson led to the creation of Black Codes, which made Reconstruction era laws irrelevant.</em>
Explanation:
After the war between the Unionist and the Confederates, the Abraham Lincoln regime tried to readmit the Southerners into the Union of America as well as toreconstruct and rebuild the southern states through his Reconstruction policy.
Its success was greatly impacted after his death through series of actions by the Southerners. <em><u>One of them was the passing of the Black Codes which was done inorder to restrict African Americans' freedom, and to compel them to work for low wages.</u></em>
<em>Others include the imposition of voter qualifications, and allowed the sharecropping system to thrive, ensuring that the standard of living did not improve for freed slaves</em>
Answer:
The answer is c
Explanation:
A natural disaster forced them to migrate out of Asia and across a land bridge
