When worn down rocks are carried away, it is called

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 .

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?

Other than earth, is also known to have magnetic pole reversal? a: venus b: mars c: earths moon d: the sun