There are $..........$ species of orchids on Earth.

India has nearly ..... varieties of plants. (in $,000$)

The Amazonian rain forest in South America is home to more than $A$ species of plants and $B$ species of fishes.

Who attempted to put a price tag on nature's life-support services?

The reasons behind conserving biodiversity can be grouped into categories,which includes?
$I$. Broadly utilitarian
$II$. Narrowly utilitarian
$III$. No utilitarian
$IV$. Ethical utilitarian
Choose the correct option.

The dolphin found in Chilka lake is