Which of the following is an omnivore?

$A$ 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 the following and select the correct option.

$A.$ Earthworm	$(i)$ Pioneer species
$B.$ Succession	$(ii)$ Detritivore
$C.$ Ecosystem service	$(iii)$ Natality
$D.$ Population growth	$(iv)$ Pollination

Match the column-$I$ with column-$II$ and select the correct option given:-

Column-$I$	Column-$II$
$A$. $J$-shape curve	$(i)$ Sigmoid curve
$B$. Verhulst-Pearl logistic growth	$(ii)$ Breed only once in their lifetime
$C$. Extinction of Abingdon tortoise	$(iii)$ Competition for same resources
$D$. Pacific salmon fish and Bamboo	$(iv)$ Resources unlimited

Comment on the following figures: $I, II$ and $III$. Here,$A, B, C, D, G, P, Q, R, S$ represent different species.