Which of the following forests is known as the ‘lungs of the planet Earth’?

Amazon rain forest is known as “Lungs of the planet Earth” because it have highest number of diversity of flora and fauna. It have almost 1,25,000 of invertebrates , 15,000 of vertebrates and 40,000 of plants of species and yet scientist estimate that more 2 million of
insects are waiting to be explored by there.
Therefore, answer is C. Amazon rain forest.