From low power to high power, what structures became clearer in the unstained onion tissue?

synapse nervous system

radon is correct hope this

find out why you don't need to aim at such a syllable pattern in english. you may have thought that haiku was supposed to be 5-7-5, so what's up with the logo by the gravitational pull of celestial objects, can touch us in unexpected ways.

i think the answer is a.keratin is the pigment responsible for skin color.