In the tropics,the rate of extinction is

More than half of the earth's flora and fauna is found in

How many biodiversity hotspots have been identified by Norman Myers globally to date?

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

Which of the following rain forest is home to more than $40,000$ species of plants,$3,000$ of fishes,$1,300$ of birds,$427$ of mammals,$427$ of amphibians,$378$ of reptiles and more than $125,000$ invertebrates?

$A$ strict protection of biodiversity hotspots could reduce the ongoing mass extinction by almost (in $\%$)