The small intestines have microvilli in the lining which help to increase the surface area of the small intestines and help to absorb nutrients.
There are sometimes similarities in the embryonic stages of organisms that do not exist in the adult stages.
Due to huge effect use of Drought the population of animal get extinct.
Explanation:
Droughts can have a severe impact on the extinction of animal populations, specifically in Arid and Semi environments. Different type of climate changes can accelerate the dying of particular species or animal population.
For extinction of population and also species Droughts play vital role. Droughts are one of such severe climatic change that leads to the extinction of species. Some life traits of specific Species make it vulnerable to drought.