Author Question: At the end of the Paleozoic era, _____ constituted about 90 of the known reptile genera. ... (Read 78 times)

viki · **on:** Jul 13, 2018

At the end of the Paleozoic era, _____ constituted about 90 of the known reptile genera.
A)therapsids
B)pelcyosaurs
C)protorothyrids
D)thecodontians
E)amphibians

Question 2

What has been one consequence of desertification?
A)The rate of global warming is accelerating.
B)There are more droughts.
C)Environmental refugees have a greater area to settle.
D)Croplands and rangelands are less productive.
E)The Sahara is no longer a fertile savanna.