Numerous finger like projections are seen in two organs of human alimentary canal. name the organs in which they are present. how do they differ in their role in both the organs?

Two finger-like projections in the human alimentary canal are:

1- Uvula (present at the back of the throat)

2- Villi (present in the small intestine)

Explanation:

Uvula is a small finger-like flesh which hangs at the edge of the palate.

When we eat food, it helps to prevent the food from entering into the nasal cavity.

Villi are made up microvilli (Microscopic projections) which absorb specific nutrients from the digested food into lacteals and capillaries.

affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.