Question

mention the effect of global warming on the geographical distribution of stenothermal like amphibians

Answer 1

Amphibians perform their physiological activities in suboptimal temperature which is the reason they are mostly found in the areas where the temperature is extreme. And the increasing global warming is increasing the temperature which will affect their distribution.

Answer 2

Amphibians have the ability to perform their physical activities at a sub optimal temperature rather than body temperature. 
So the geographical distribution will have an effect on their geographical distribution.