Just as a person moves from Delhi to Shimla to escape the summer heat,where do millions of migratory birds go to escape the harsh winter of Siberia and other northern regions?

Cryopreservation of gametes of threatened species in viable and fertile condition can be referred to as

Which one of the following is an example of $ex-situ$ conservation?

Choose the correct sentence$(s)$ for in situ conservation:
$a$ - Sacred groves are part of in situ conservation.
$b$ - Zoological parks are an approach for in situ conservation.
$c$ - In this approach,ecologically unique and biodiversity-rich regions are legally protected.

Define/Explain: Sanctuary.

Provide the definitions/explanations for the following:
$(i)$ Gene Bank
$(ii)$ Ex-situ Conservation