$A$ good soil is that which

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

They are dominant plants of the cold desert

The figure given below is a diagrammatic representation of response of organisms to abiotic factors. What do $(i)$, $(ii)$ and $(iii)$ represent respectively ?

Niche is defined as the