People living at sea level have around $5$ million $RBC$ per cubic millimeter of their blood whereas those living at an altitude to $5400$ metres have around $8$ million. This is because at high altitude

Body compensates low oxygen availability at high altitudes by

$I.$ increasing $RBC$

$II.$ decreasing binding affinity of haemoglobin

$III.$ increasing binding affinity of haemoglobin

$IV.$ increasing breathing rate

$V.$ decreasing breathing rate

Choose the correct option for given statement

The major characteristics of the vegetation of a locality are controlled by

What is high altitude sickness ? Write its symptoms.

Below is the diagramatic representation of response of organisms against temperature. Find out the correct match.