What is the Role of the bronchi, bronchiole, rib, intercostal muscles, alveoli and the diaphragm?

Ascientist wants to determine the effect of a new type of gasoline. he fillsone car with normal gasoline and another identical car with the new gasoline. which is the control group? a. the new type of gasolineb. the car with the normal gasolinec. the car with the new gasolinethe amount of gasoline usedd. the amount of gasoline used

This part insulates the reaction chamber from the transfer of heat to or from the surrounding environment

Using meiosis, the sporophyte produces spores that are .