The__ is involved in
ribosome synthesis.
A. Golgi body
B. rough ER
C. smooth ER
PLS HELP :)

Apopulation of black bears depends on salmon from a stream for food. if a drought causes the stream to run dry one year, how will this likely impact the black bear population?

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

This is a biological reaction due to a stimulus. i need this quickly !