Global warming
Glacial melting
Cooling period
Answer:
the greenhouse effect
Explanation:
Cenozoic
B.
Precambrian
C.
Mesozoic
D.
Paleozoic
The supercontinent Pangaea split up during the Mesozoic era. Option (C) is hence the appropriate response.
The late Paleozoic and early Mesozoic ages saw the existence of the supercontinent known as Pangaea or Pangea During the Carboniferous period, around 335 million years ago, it was formed from the earlier continental blocks of Gondwana, Euramerica, and Siberia.
At the conclusion of the Triassic and the start of the Jurassic periods, about 200 million years ago, it started to disintegrate.
Pangaea was centered on the equator and encircled by the Paleo-Tethys and later Tethys Oceans, as opposed to the modern Earth and its spread of continental mass.
The newest supercontinent to have existed was Pangaea, and it was also the first to be recreated by geologists.
Learn more about Pangaea, from:
#SPJ5
The rights and the privileges of freedmen were still threatened after the civil war because laws were still made to regulate their activities. The black codes law were enacted which controlled the way a freed man can live; strict restrictions were placed on them, they can not vote, serve on jury, travel freely or engage in occupation of their choice.
Hope this helps.