Cell wall, choroplast, and ribosomes
the answer is A. hope i was a help to you
The larger mass a star has the shorter its life span will be because since it is so large, the more nuclear energy it has to create to keep it up and running. So the smaller the star the longer its life span and vise versa. Hope this helped!
Because, substances can pass through it while others can not but Oxygen, good molecules,
and waste products can only go through it.
