The Permian period ended and then rapid speciation occurred as new animal and plant forms evolved. The most likely explanation for this is .
I) adaptive radiation
II) ecological opportunity
III) lack of competition
IV) morphological innovation
A) just one of the above
B) two of the above
C) three of the above
D) all of the above

Option (C)

Explanation:

The Permian period refers to the last period of the Paleozoic era, which started about 300 million years back and ended by about 250 million years back. The Permian period was ended by the occurrence of a catastrophic mass extinction event, commonly known as the Permian-Triassic (P-T) boundary.

Soon after this eruption, there occurred rapid evolution of plants and animal species, and this was possible because of the following reasons-

Thus, the correct answer is option (C)- three of the above.

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.