the water cycle is the movement of water between earth's surface and which of the following locations?
a)groundwater
b)living things
c)the atmosphere
d)outer space

the three components of a nucleotide are the nitrogenous base, the phosphate group and the five-carbon sugar.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.