Answer: Exhaled air consists of 78 percent nitrogen, 16 percent oxygen, 4 percent carbon dioxide and potentially thousands of other compounds.
Explanation: Does this help???
Improved Physical Fitness: Improves children's muscular strength, flexibility, muscular endurance, body composition and cardiovascular endurance.
Skill Development: Develops motor skills, which allow for safe, successful and satisfying participation in physical activities.
Regular, Healthful Physical Activity: Provides a wide-range of developmentally appropriate activities for all children.
Support of Other Subject Areas: Reinforces knowledge learned across the curriculum. Serves as a lab for application of content in science, math and social studies.
Self Discipline: Facilitates development of student responsibility for health and fitness.
Improved Judgment: Quality physical education can influence moral development. Students have the opportunity to assume leadership, cooperate with others; question actions and regulations and accept responsibility for their own behavior.
Stress Reduction: Physical activity becomes an outlet for releasing tension and anxiety, and facilitates emotional stability and resilience.
Strengthened Peer Relationships: Physical education can be a major force in helping children socialize with others successfully and provides opportunities to learn positive people skills. Especially during late childhood and adolescence, being able to participate in dances, games and sports is an important part of peer culture.
Improved Self-confidence and Self-esteem: Physical education instills a stronger sense of self-worth in children based on their mastery of skills and concepts in physical activity. They can become more confident, assertive, independent and self-controlled.
Experience Setting Goals: Physical education provides children the opportunity to set and strive for persona
The answer is the thoracic cavity
