I believe that renewable energy may be the answer because D is absolutely not the answer and A would not help us. That's leaves us with B and C and B seems like it's a better choice than C.
Answer:
I think the answer is F.
Explanation:
F) B and D
*B. the number of them increased D.they consumed smaller things in the water*
<em>Hope this helped ! :)</em>
There are different types of observers. Casual observers differ from scientific observer. Seeing and observing are two different things. Not that everybody seeing is actually observing the thing.
A casual observer just sits back and watch for something to happen while a scientific observer comes up with some hypothesis to work on it.
Answer:
Both require a vacuum and a compound microscope has greater magnification ability than a simple microscope.
Explanation:
