It should be 1000x which is the total magnification of the whole thing... I believe. Would you happen to be doing a microscope quiz
First, he should measure how long it takes for the liquid to become clear if X and Y are mixed together. Then, he should measure how long it takes if he also adds substance A to X and Y. He will find out if substance A is a catalyst. hope this helps :)
All I know is that you can get a short-term diabetes when you're pregnant, because my mom had diabetes when she had me and my sister. It comes from the cravings, which for her were salty and very sweet, and sounded very disgusting in my opinion.
I think it is D. You experience increase in breathing rate to obtain more oxygen which is delivered to cells through the bloodstream
Cuz of the refraction of light