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

How did the club fungi get its name? a. it is named for the club-shaped seeds it produces. b. it is named for the way individual species grow together in small groups called “clubs.” c. it is named for the club-shaped area where it produces spores. d. it is named for the club-like mechanism it uses to kill its prey.

Monarch butterflies have brightly colored orange wings with black patterns on them, making them easily visible to birds that eat butterflies and moths, yet birds rarely eat the monarchs. likewise, the monarch caterpillars are brightly striped yellow and white and black, and they also are rarely eaten by birds, although some wasps will attack them and feed them to their young. what can be inferred from these observations? monarchs must threaten and attack birds, but not wasps. monarchs have a way of discouraging bird predation that does not involve hiding. monarchs’ wings are so colorful that most birds must find them difficult to eat. monarchs lay more eggs than other less conspicuous butterflies.

In the first stage of the nuclear fuel cycle the spent fuel must be transported, processed, and disposed of properly. true or false