Answer:
An element is a pure substance and is made of only one type of atom; it cannot be broken down into a simpler substance.
Answer:
The focal length of a lens is refers to the distance from the center of the lens to the principal foci.
<span>An imaginary line perpendicular to a reflecting surface is called "a normal" (principle line)
So, Your Answer would be Option B
Hope this helps!</span>
<span>Active Galactic Nuclei.</span>
Answer:
The best choice would be c
Explanation: Sarah wants this wind turbine to efficient since she can only get one. C has the most reasonable option data collected will help her know the best wind speed over her farm.
