The “ruling reptiles”
a. dominated the land for 125 million years.
b. coexisted with ichthyosaurs.
c. coexisted with turtles and tuataras.
d. lost many lineages in a mass extinction that
ended the Jurassic.
e. did all of these.
Answer: e
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Below is a figure from an experiment that was performed to measure the effect of carbonate ion (CO32-) concentration on the calcification (growth) rate of coral reefs. At which point on the graph is the ocean pH the lowest?
A) A
B) B
C) C
D) D
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