Question

what are the factors responsible for the diversity of flora and fauna

Answer 1

these include :
the nature of land
the climate and temperature
type of vegetation...

maybe this helps..

Answer 2

every thing in nature is diverse because of its habits all the plants and animals make certain changes in them to adjust in the surroundings like camel need a lot of water that's why he had developed a jump on his back , to protect from loss of water cactus had developed spines instead of leaves . may you understood please thank me