Answer:
Single replacement
Explanation:
A reaction in which one element replaces a similar element is called single replacement. In this case, C is replacing A.
Wavelength = (speed)/(frequency) = 300,000,000/120,000,000 = 2.5 meters
<span>Amplitude is the correct answer. I hope this helps.</span>
A microscope is an instrument from which you can see the cells of an object.
It helps you to observe the cells of substance.
Powerful microscopes helps better in observing minute particles or bacterias.
Hope it helps...