Pie chart

Summary: The pie charts in Figure 3 show how much of each gas is present in inhaled air and exhaled air. Tags: science student-book-7 biology Created: 2026-05-21 Last Updated: 2026-05-21

The pie charts in Figure 3 show how much of each gas is present in inhaled air and exhaled air.

This concept is from the [Science Student Book 7](Science Student Book 7/Biology/Body Systems/2.6 Breathing - gas exchange.md), Biology section.