A). Explain the meaning of the term gas exchange surface in human lungs. b). List three features of gas exchange surfaces.

c). Explain how each feature in your list helps gas exchange to happen efficiently.

is in the form atp or adenosine triphosphate

the farther away the object is from the central star (the sun) it's gravitainal pull on the object is weaker when it is farther

explanation:

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.