The elimination of an organism in an ecosystem takes out all balance. There may be an overpopulation of some organisms, and an underpopulation of others. For an example, if rabbits were taken out of the food chain, there would be an overpopulation of grass, and underpopulation of what eats rabbits.
Look up for example The rain forest and the desert then tell how they are different
Adam was the first men of earth
The river Ganges originates in the Himalayas and it ends (has its mouth) in the Bay of Bengal - so the correct answer is the Bay of Bengal.
The Bay of Bengal is the body of water to the East of India ( to the west it is the Arabian Sea) and the Bay of Bengal is part of the Indian Ocean.