When the natural sources of food in the ocean declined, what are the methodfs evolved for food procurement by the ancestors of Monera and Protista.

What happens when food enters the stomach and explain the role of HCI in digestion process.

What happens when you take little water with high salty food?

i. Birds visiting Vedanthangal show 'migrate' respons. ii. Fertility and Fecundity determine the mortality in a population. iii. K selected species have long life expectancy. iv. Degree of competition is high when animals have different sources of food.