Kangaroo rat found in .........

Mango, tuna fish, snow leopards are

Good soil is

The side effects of heavy and constant grazing is that the

An area of soil is thoroughly wetted and allowed to drain until capillary movement of water stopped. The water contents of the soil will give an estimate of its

In most animals, the metabolic reactions proceed in a ...$A$... temperature range (in humans, it is $37^{\circ} C$ ). But there are microbes (archaebacteria) that flourish in hot springs and deep sea hydrothermal vents where temperature far exceed ...$B$...

Choose the correct option for $A$ and $B$