Brainliesttt !me : )
a hair gel is a mixture. which of the following is true about hair gel?
a chemical change is required to separate its mixed components.
a physical change can separate its mixed components.
it is made up of millions of units of a single type of compound.
it is made up of millions of atoms of a single element.

I would say A) A chemical change is required to separate its mixed components

a boiling water reactor does not boil the water. a pressurized water reactor boils the water faster. a pressurized water reactor is heated directly by the core. a pressurized water reactor does not use fission.

in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation: