D. It has mass, takes up space, and can be seen without a microscope.
Answer:
electrons (can i have brainliest)
Explanation:
Answer:
One, It can help children to easily learn or recognize the structure of the brain.
Second, It can help children to learn about the ridges and groves, blood vessels in the brain which will grow curiosity in them to do more research about the stucture and function of the brain.
Explanation:
I hope this helps :)
Delta E= R[1/n^2 (initial) - 1/n^2 (final) ]
so transition n=3 to n=1 will emit more energy
