Plate tectonics is used to explain and understand the formation of which of the
following?

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

Molecular models of two different substances are shown below. in the molecule on the left, the oxygen atom pulls on electrons more strongly than the hydrogen atoms. in the molecule on the right, the two oxygen atoms pull on the shared electrons with the same strength. water molecule, h,o oxygen molecule, oz when the two substances are put in the same container, they do not attract each other. why does this happen? a. they both contain oxygen. b. one is polar and one is nonpolar. c . they are both polar. d. they contain different elements.

The response is the basis for vaccination. primary secondary tertiary none of the above