Differences in courtship or other behaviors prevent mating.

Which of the following is not a main characteristic that scientists focus on when determining which kingdom an organism belongs to

The condition in which joints are inflamed is bursitis select the best answer from the choices provided ot f

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 .