100 POINTS Having studied tectonics in school, Roberto grew interested in tectonic
plates and how they move. Plates move in different ways along plate
boundaries. What determines how the plates interact at their boundaries?
the kind of plates they are and whether they keep moving
the kind of boundary and the directions in which the plates are moving
the materials the plates are made of
the difference in thickness of the plates
Hey

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.

Which of the following is the best definition for the process of photosynthesis? a.) plants digest sugars to make energy. b.) plants use oxygen and glucose to make carbon dioxide. c.) plants use sunlight and carbon dioxide to make sugars. d.) plants use sunlight to make chlorophyll and chloroplasts.

Which event would lead to primary succession of a forest?