At which lattitude, heat gain through insolation approximately equals heat loss through terrestrial radiation
$22\frac{1}{2}^\circ $ North and South
$40°$ North and South
$42\frac{1}{2}^\circ $ North and South
$66° $ North and Souththe temperature
Group of two or more than two plant species is called as
The average concentration of $CO_2$ in the atmosphere is
World environment day is celeberated on
In recent years, there has been an increasing incidence of floods in the plains of northern India because
Insectivorous plants grow on