7. Which of the following statements are accurate?
A. Humans bring air into their lungs by generating a positive pressure (higher pressure relative to the atmosphere)
B. When the diaphragm contracts it becomes dome-shaped and causes the lung to decrease in volume which decreases the pressure of air in the lungs.
C. In a close chamber (such as the lungs), As the volume of a gas increases the pressure decreases
D. The diaphragm is the primary breathing muscles in humans
E. In human lungs, new air mixes with air in the lungs already. This decreases the efficiency of ventilation

the national environmental policy act (nepa) is a united states environmental law that promotes the enhancement of the environment and established the president's council on environmental quality (ceq). the law was enacted on january 1, 1970. to date, more than 100 nations around the world have enacted national environmental policies modeled after nepa.

where is the scientific experiment?

brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

explanation: