Lung Capacity Drops _____ Percent Between the Ages of 20

question 120

Multiple Choice

Lung capacity drops _____ percent between the ages of 20 and 80,even when disease is not present.

• A)20
• B)40
• C)50
• D)60

---

Definitions:

Streptococcus Mutans

A species of bacteria that is a major contributor to tooth decay and cavities due to its ability to produce acid from sugars.

Cyanobacteria

Photosynthetic bacteria that produce oxygen as a byproduct of photosynthesis, found in various aquatic environments and historically significant for oxygenating the Earth's atmosphere.

Atmospheric Oxygen

The oxygen that is part of Earth's atmosphere, essential for the respiration of most living organisms and a product of photosynthesis.

Chloroplasts

Organelles found in the cells of plants and other photosynthetic organisms, sites where photosynthesis takes place.