The magnification/power of the eyepiece and the objective lens you are using. I think the eyepiece alone is usually 10x. You just multiply that of the eyepiece and the objective lens.
Answer:
A
an ion with 10 protons, 9 neutrons and 8 electrons
Explanation:
The charge is protons - electrons
10 - 8 = 2
The respiratory system of the birds
Answer: Light, temperature, water, and CO2.
Explanation: