A scientist is trying to develop a new treatment to stop cancer cells from dividing. In the cancer cells, which of these processes will stop il' tlie treatment is successful? A mitosis B. binary fission C. genetic recombination D independent assortment

Depending on the organism the number of in a cell may change

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.

What are some natural processes that represent physical and chemical changes?