The term 'The Evil Quartet' is related to the major causes of:

Which of the following are recently extinct subspecies of tiger?

Choose the incorrect option for water hyacinth $(Eichhornia\,crassipes)$.

Choose the correct statement.

What can be the consequence of the loss of wildlife?

Many species like $Steller's$ sea cow and passenger pigeon have been driven to the brink of extinction. Which of the following describes this situation?