Explore topic-wise MCQs in Biology Questions and Answers.

This section includes 1 Mcqs, each offering curated multiple-choice questions to sharpen your Biology Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.

What percent of the total oxygen in the Earth’s atmosphere is released by the Amazon forest?

A. 50 %
B. 20 %
C. 40 %
D. 2 %
Answer» C. 40 %