What are the 4 variables that define gases? *

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 .

In this case, the statement that people who exercise for an hour may have lower cholesterol levels is .

In the water cycle , when does water undergo a chemical change