The photoelectric effect is the of
electrons when electromagnetic radiation, such as
light, hits a material.
DONE

First Question : EMMISION

Second Question: FREQUENCY

have a great day because if you dont you and i will be sad

you did not give any options thus this is the best answer i can give to you with this little information you have given

> they are both natural and not man made

> they can be tracked and predicted by the right tools

-love shrooms