How many countries pledged their commitment to achieve reduced rate of biodiversity loss by $2010$ in the world summit on sustainable development held in $2002$ in Johamnesberg, South Africa?
$180$
$200$
$190$
$210$
In which year, Earth Summit held?
What is common to the species shown in figures $\mathrm{A}$ and $\mathrm{B}$ ?
Gametes of threatened species can be preserved in viable and fertile condition for long periods using
Describe various methods used in ‘In situ conservation’