2) Las ………………………., tienen una estructura rígida que recubre la membrana plasmática, compuesta principalmente de celulosa.

blah

explanation:

bc blah

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link:

if you know your abc's you should be able to get your answer or just use google

acceleration = 18/3 = 6 m/s per second.

hope i

-lavira: )