Which one has a cell membrane prokaryotic or eukaryotic cells?

Look at the following answer choices and determine which belongs in the both category. testable, can be disproven explains natural phenomena, has evidence to support it prediction, tentative, one or more scientists working together well established, many different scientists working independently, highly reliable

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?

Does masterbation affect height growth or loss of growth hormone?