Because they have gills and they use this for swimming and they become good swimmers because of their gills. They are also used to swim under water. And the last but not the least answer is that God made them like that, God made each species and organisms unique from each other. Ok? Did I … Read more

Lack of employment opportunities, lack of quality education, problems in maintaining peace and order condition, lack of health care and services, problems in food supply, and many more. To prevent these things to happen, we should have family planning or have a regular check up to a doctor. =p