The healthy human immune system responds to pathogens with both specific and nonspecific processes. Which
of the following models depicts a nonspecific response?

What are four key elements of the study of economics?

What happens whenever a net force acts on an object

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.