What made niches available for the radiation of: amphibians

These points made niches available for the radiation of amphibians such as:

Step by Step Explanation:

Sooner after they appeared, amphibians are gone through huge adaptive radiation.some were big such as about five meters long.Amphibians become the dominant form of animal life in the swampy warm forest.During the Permian period, the earth's surface and climate change dramatically.The climate becomes less humid and cooler.because of these changes, many of the swamps dried up.these changes made difficult to survive for the amphibians animals.but that was not the case with reptiles.during this time, they began their great period of adaptive radiation.

When the ball is rising up, it gains kinetic energy. when the ball reaches the very top, it will have all potential energy, until it falls back down and gains it kinetic energy. finally when you catch the ball or it falls back down, it would have gained its potential energy back.