Don’t mind the writing i didn’t know what the answer is

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

2points what do bacteria have in common with the cells of other living organisms?

What does the number 18.9984 represent in the image?