Question 91

It is more than one-fifth the size of all the other rainforests in the world combined.

The Amazon Basin is indeed more than one-fifth the size of all other rainforests combined, as it covers an area of over 2.3 million square miles, which is double the length of all remaining rainforests.

A) It is not much larger than all the other rainforests in the world combined.

This statement is incorrect. The Amazon Basin is substantially larger than all other rainforests combined, covering an area that is twice the size of all remaining rainforests globally, making it significantly larger.

B) It is more than one-fifth the size of all the other rainforests in the world combined.

This statement is true. The Amazon Basin's area is over 2.3 million square miles, which is indeed more than one-fifth of the total area of all other rainforests combined, reinforcing the statement's accuracy.

C) The tree leaves there have a specific shape to allow raindrops to fall off easily.

While it is mentioned that the tree leaves are pointed and narrow to facilitate the dropping of raindrops, this statement does not specifically address the overall size or characteristics of the Amazon Basin itself, making it less relevant to the question.

D) It is a habitat for many mammals and birds.

This statement is also true, as the Amazon Basin is home to a vast number of species, including 2,000 birds and various mammals. However, it does not directly address the size comparison of the Amazon Basin to other rainforests, which is the focus of the question.

Conclusion

The statement that the Amazon Basin is more than one-fifth the size of all the other rainforests combined is definitively accurate, based on its vast area of over 2.3 million square miles. Other options either misrepresent the size or do not directly relate to the specific comparison being asked in the question. Therefore, Option B stands out as the correct answer.