Deciduous forests are mainly found in regions where annual precipitation ranges between:

Which of the following is the most important abiotic factor in a pond ecosystem?

Permafrost condition is a characteristic feature of:

$A$ - The salt concentration is less than $5$ (parts per thousand) in inland waters.
$R$ - The salt concentration is $30 - 35$ (parts per thousand) in the sea.

At which latitude,heat gain through insolation approximately equals heat loss through terrestrial radiation?

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