Common, chronic skin condition that causes skin cells to build up on the skin's surface

What is the answer to this particular question i have in health

The five components of health-related fitness include cardiorespiratory fitness, muscular strength, resting heart rate, muscular endurance, and body composition cardiovascular fitness, muscle tone, muscular endurance, flexibility, and body composition calisthenics, muscular strength, muscular endurance, flexibility, and body composition cardiorespiratory fitness, muscular strength, muscular endurance, flexibility, and body composition

Explain the importance of getting and proper treatment for a mental illness.