Question 1 (3 points) (03.01 LC)
Without the discovery of magnetic reversals recorded on the ocean floor, scientists
a
could not confirm the usefulness of sonar
Ob
could destroy the hypothesis of continental drift
Oc
could not provide a mechanism for moving continents
could explain how the seafloor was being destroyed
Question 2 (3 points)

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.

Ture or false evidence for evolution includes millions of fossils

The current thought on the structure of the cell membrane is: a. a static phosphate sandwich of lipids b. a fluid-mosaic of phospholipids and proteins c. a bilayer of proteins with static lipid molecules d. an impermeable bilayer of protein molecules e. a static and permeable phospholipid single layer