The rh factor identifies the presence of the rhesus protein in blood. the rh factor can be represented by a + or – sign. it is important to know the rh factor because just like how the antigens on the blood must be compatible, the rhesus protein in blood must also be compatible. if a person has rh+ blood they can blood. answer c. rh+ or rh-

i'm guessing this is from edg enuity so the answers would be, from top to bottom,

theodor schwann

matthias schleiden

robert hooke

rudolph virchow

anton van leeuwenhoek

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.