Answer:
a stationary front moves when a cold front or warm front stops moving this happens when two masses of air are pushing against each other but neither is powerful enough to move the other winds blowing parallel to the front instead of perpendicular can help it stay in place.
Ur intercostle muscle between ur ribs
It is A: a chemical reaction, due to the acid activity (acetic acid)
The answer to ur question is gametophyte....
Hope This helps u....!!!