What is the correct definition of a species? a. a population of creatures who all look the same b. a population of creatures who are all the same size c. a population whose members are all the same color d. a population whose members are able to interbreed freely under natural conditions

Which medullary index indicates a human hair? a. 0.653 b. 0.733 c. 0.516 d. 0.256

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.

Which is the function of the hypothalamus in thermoregulation? answers: -sensor -effector -stimulus -intergrating center it's either a or c i believe