Pairs of identical chromatids are attached to each oher at
an area called the
• A. centriole
• B. centromere
• C. Spindle
• D. chromosome

What is mitosis and how does it affect change

Which of the following occurs after a natural or unnatural disturbance in an ecosystem

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.