Identify the type of age pyramid for the human population shown in the image and state what it represents.

Countries with high population growth rates have taken measures to reduce them. The figure below shows the age pyramids of populations. Which of the following is a correct interpretation for their status after $20$ years?

$A$ country with a high rate of population growth took measures to reduce it. The figure below shows age-sex pyramids of populations $A$ and $B$ twenty years apart. Select the correct interpretation about them.

What type of human population is represented by the given age pyramid?

Match Column-$I$ with Column-$II$ and select the correct option.

Column-$I$	Column-$II$
$(a)$ Mutualism	$(i)$ Potent force of organic evolution
$(b)$ Orchid	$(ii)$ Negative interaction
$(c)$ Parasitism	$(iii)$ Beneficial interaction
$(d)$ Competition	$(iv)$ No harm to the host

According to the $1991$ census,the maximum percentage of population increase was in which state?