What are the choices given? I might be able to help but you're not giving me much info to work with.
Edit: Alright if that's the case the Answer should be D. Mineral.
Answer:
a pili. f flagellae
b nucleoid g chromosome
c plasma membrane h ribosomes
d cell wall
e capsule
Explanation:
Answer:
It is the reason the sky is blue
Explanation:
They are called Tracers ;)