In what ways might tidal waters be different from other waters

After getting the slide and microscope ready, stella is eager to see the microscopic pond water specimen! she crouches around her microscope and aligns her eye with the microscope’s eyepiece. but she's only able to see a bright white light. at this point, no specimens or cells are visible on stella's pond water slide. after taking a moment to collect her thoughts, stella realizes she can't see any lifeforms because .

The response is the basis for vaccination. primary secondary tertiary none of the above

What substance acts to prevent sudden ph changes in bodily fluids?