What`is the _________ of our planet?????

Question

i need help!!!!!!!

Answer 1

needs contexts

possible words

state

diameter

end

ruler

and so on.....

Answer 2

the answer is the lungs of our planet.  The tropical rain forests have been called that because they provide most of our oxygen.

the toucans and the usually smaller toucanets and aracaris (AH-rah-SAH-reez); all are restricted to the American tropics. Six species occur in Costa Rica.

Toucans live in almost any kind of forest in the neotropics from Central America to northern Argentina. The birds reach their highest species diversity in the Amazon rainforest, where new species may await discovery.

Answer 3

is it the rain forest

Answer 4

it doesn't make sense.

Answer 5

Wealth? Advantages? Albido? What context?