How is amplitude used to measure waves?

What do these two changes have in common? acid rain weathering a marble statue and silver jewelry tarnishing

What type of cell transport uses carrier proteins? a. passive diffusion b. facilitated diffusion c. osmosis d. active transport

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-