Is an energy resource harnessed from flowing water

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 .

Complete the possible outcomes for each generation in the pedigree chartaa aa aa

What was the land like over 500 million years ago? what was under the sea?