A temperature above its maximum temperature tolerance it has the most impact over the organism survival. When under higher temperatures than the ones supported by the organism, the organism's proteins tend to denature and it becomes impossible to return to normal activity. While when under lower temperatures then the ones normally supported, the organism may stop its activity but can easily return to it once the temperature returns to ideal.
The answer is actually none of the above. The Devonian Period allowed for amphibians to evolve, as well as terrestrial vertebrate. Forests grew to cover most of the continent. All of these events happened in the Devonian Period.
If their data they collected from their experiment proved their hypothesis correct, then yes, their supported hypothesis can be called a scientific theory.
The third option i think!:) im sorry if u get it wrong
The Lake and Ponds Biome.