Theories of Aging

Excessive use of electronic devices

Genetic mutations and aging genes

Lack of exercise and poor diet

Injury and long-term exposure to environmental factors (correct)

Genetic predisposition

Limited resources and energy (correct)

Lack of essential nutrients

Inefficient cellular processes

Air pollution, toxins, and radiation

Water, oxygen, and sunlight (correct)

Medications, alcohol, and smoking

Processed food, artificial sweeteners, and preservatives