Regular exercise is important to the maintenance and improvement of health. Food provides energy and nutrients for growth and development. Nutrition requirements vary with body weight, age, sex, activity, and body functioning. Risks and benefits Risk analysis considers the type of hazard and estimates the number of people that might be exposed and the number likely to suffer consequences. The results are used to determine the options for reducing or eliminating risks.
Individuals can use a systematic approach to thinking critically about risks and benefits.
Important personal and social decisions are made based on perceptions of benefits and risks. Science influences society through its knowledge and world view. Societal challenges often inspire questions for scientific research. Technology influences society through its products and processes. Technology influences the quality of life and the ways people act and interact.