A person’s blood type depends on the type of protein marker, called an , found on the cell membranes of the red blood cells.

Ahydroelectric plant takes energy from water and turns it into electrical energy. what are the transformations of energy in the water molecules that are used in the process of generating electricity this way?

Acamcorder has a power rating of 20 watts. if the output voltage from its battery is 9 volts, what current does it use?

Which statements did both aristotle and ptolemy assume? check all that apply.