Choose the odd one with respect to the features of a tropical rain forest.

State the relationship between habitat and temperature.

Consider the following statements $(A - D)$ each with one or two blanks.
$(A)$ Some snails go into $ . . . . . . (i) . . . . . . $ to avoid $ . . . . . . (ii) . . . . . . $ related problems.
$(B)$ Since small animals have a $ . . . . . . (iii) . . . . . . $ surface area relative to their volume,they tend to lose body heat $ . . . . . . (iv) . . . . . . $ when it is cold outside.
$(C)$ Next to temperature,$ . . . . . . (v) . . . . . . $ is the most ecologically important environmental factor.
$(D)$ Every $ . . . . . . (vi) . . . . . . $ the famous Keoladeo National Park in Rajasthan hosts thousands of migrating birds.
Which one of the following options gives the correct fill-ups for the respective blank numbers from $(i)$ to $(vi)$ in the statements?

The happiness,health,and prosperity of the population of a place depend upon:

Match the following columns:

Column-$I$ (Salt concentration)	Column-$II$ (Example)
$P$. Less than $5\%$	$I$. Inland waters
$Q$. $30-35\%$	$II$. Hypersaline lagoons
$R$. More than $100\%$	$III$. Sea

$........$ is the most ecologically relevant environmental factor affecting the life of organisms.