UPSC Civil Services Model Paper 7

The Maximum number of the species of butterflies are found in tropical countries because butterflies can not tolerate low temperatures.
Butterfly's bodies work best at an internal temperature of about 82 degrees Fahrenheit (28 degrees Celsius).
Butterflies can't move their wing muscles at all if they get too cold, which means they can't look for food or flee from predators.
Butterflies use the colors on their wings for camouflage and as a warning to predators, which helps them stay alive long enough to reproduce.
They also use wing shape and color to identify and sometimes impress, a mate.