NEED HELP FAST. I know it’s seems easy, I’m just not sure what the answer is

The universe contains..

A) few black holes
B) billions of galaxies
C) millions of stars
D) few wavelengths

Surrounded by microtubules, located near the nucleus. (don't try to google it) (give answer only if u know)

What initially causes a nerve impulse? release of enzymes out of the neuron movement of chemicals into the dendrites of the neuron pathogens attacking the dendrites of the neuron red blood cells bathing the neuron

Which description shows competition in an environment? an organism that feeds on some food an organism that finds a place to sleep three organisms of the same species living in an area three organisms battling over limited resources