Which of the following are examples of subspecies that have recently gone extinct?
$(a)$ Caspian
$(b)$ Russian
$(c)$ Bali
$(d)$ Quagga

Of the four major causes for the loss of biodiversity (Alien species invasion,habitat loss and fragmentation,over-exploitation,and co-extinctions),which according to you is the major cause for the loss of biodiversity? Give reasons in support.

Which of the following is an endemic fish species of Lake Victoria?

Which endangered animal is the source of the world's thinnest, lightest, warmest, and most expensive wool?

Biodiversity loss occurs due to the reasons given below:
$(i)$ Habitat loss and fragmentation
$(ii)$ Co-extinction
$(iii)$ Over-exploitation
$(iv)$ Alien species invasion
Identify the correct reasons.

When does wildlife face the greatest threat of extinction?