To keep the egg from drying and allows reproduction
Intervention is a health promotion activity designed to change a pre-existing condition related to the target audience's behaviour. Interventions include a screening programs, vaccination, food supplementation and water supplementation, and health promotion.
Health promotion is a kind of process of allowing people to increase command over and improve their health. It enables to move beyond a focus on individual behaviour toward a wide range of sociable or environmental interventions.
Health promotion activities are typical activities for fitness promotion, wellness programs and disease prevention which include Advertising Health Care for Grown-ups, Helping People Who Smoke Quit, Increasing Access to Healthy Foods and Physical Activity, Preventing Excessive Alcohol Use, or Promoting Women's Reproductive Health, etc.
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You need visible and verbal I don’t know the other two
When a factory is running or when driving a car that gives off carbon dioxide and that pollutes the air.