The need for energy, gained by respiration and photosynthesis, is the driving force of the oxygen cycle. True or False

What evidence is there that convection occurs in earth’s troposphere?

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.

Ais a landform that is formed at the mouth of a river from the deposition of sediment carried by the river as the water flows.