The diagram shows the Identification of two types of waves.

Which question is represented By x on the Diagram Helps identify the type of wave .

A. Does the wave require a medium to travel.

B. Do the particles travel perpendicular to the wave

C. Does the waves have amplitude

D. Do the particles transfer energy

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.

Nucleic acid certain protein cell membranes certain carbohydrates

Natural selection changes allele frequencies because some survive and reproduce more successfully than others.