This probably won't help since this was a year ago but here it is:
The diaphragm adjusts the amount of light on a light microscope.
Answer:
the answer is B
Explanation:
Sorry about those idiots from the other question
1. B A reduction in competition.
2. C. Respiratory system
Liquid as first of all, the particles aren't compact ( which would mean solid) nor are they spread out ( which would mean gas) nor is it plasma as we aren't given protons or electrons.
Answer: C. 1.8
Steps:
25x = 45
x = 45/25
x = 1.8
