Describe the layers of the earth. when you have prepared your answer, click the "start" button below. be sure your answer is in paragraph form and is at least 7 sentences long.

What is the relationship between absorbance of light and the rate of photosynthesis?

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.

9. the history of life on earth is recorded in