Which of the following best describes expiration? The elastic lung tissue recoils to its smallest length decreasing lung volume.
Air flows in until the external and internal pressures are equalized.
The volume of the chest cavity increases and the lungs are stretched.
The diaphragm contracts, moves downwards, and expands the chest cavity.

What is the best way to use the clean water act to address the issue of dirty water and diseases that plague asmall community? a) to report the number of cases of people who havecholera symptomsb) to provide health guidelines about effects from waterborne diseases c) to enforce standards that focus on chemical dischargeinto bodies of waterd) to carry out research that investigates how dirty wateraffects human health