Read the following statements with reference to the villi of small intestine.(i) They have very thin walls.(ii) They have a network of thin and small blood vessels close to the surface.(iii) They have small pores through which food can easily pass.(iv) They are finger-like projections. Identify those statements which enable the villi to absorb digested food. * (i), (ii) and (iv)
(ii), (iii) and (iv)
(iii) and (iv)
(i) and (iv)

(i),(ii) and (iv)

Explanation:

Villi are finger-like outgrowths of the human intestine.

The main role of villi is to amplify surface area for rapid absorption of digested food. They have very tiny walls; the role of these walls is to pass digested nutrients through diffusion. These are directly connected to the blood vessels. Thus, the circulating blood can carry these nutrients away.

The correct answer is the first option.

the cold front replaces the warmer air at the ground level changing the wind to be breezy and denser.there is also an immediate drop in the temperature.