The light intensity can be measured by

Regulators are also called

Which ecological factors are the most strong determinants of various biomes?

Match the following columns:

Column-$I$ (Temperature)	Column-$II$ (Organism)
$P$. Above $100^{\circ}C$	$I$. Thermoacidophiles
$Q$. $37^{\circ}C$	$II$. Human
$R$. Below $0^{\circ}C$	$III$. Antarctic fish

The temperature gradient over the Earth's surface is:

The figure depicts annual variations in temperature and precipitation for different biomes. Based on the provided graph,identify the correct sequence of biomes corresponding to the labels $A, B, C, D, E, F$ as shown in the standard $NCERT$ diagram:
$1$. Temperate forest
$2$. Tropical forest
$3$. Coniferous forest
$4$. Grassland
$5$. Desert
$6$. Arctic and Alpine tundra