What percentage of the total oxygen in the Earth's atmosphere is produced by the Amazon rainforest (in $\%$)?

Among the classes of invertebrates that represent global biodiversity, which are the most abundant?

Select the correct option regarding species diversity.

Within biological communities,some species are important in determining the ability of a large number of other species to persist in the community. Such species are called

Which among the following shows highest amphibian species diversity?

The Amazon rainforest is home to more than $...........$ species of invertebrates.