Balanced forces are forces that are equal in force but opposite sides. Mary would need to push on the opposite side of Trey with the same force of 30N. (I provided a photo to visualize)
<span>Is the study of humankind in all times and places.
-the study of all humans throughout time and space. Hope it helped!</span>
Plasmolysis is the reason. The reason that the Elodea cell prevents from collapsing completely is that the Plasmolysis is the main reason because it always has water to keep it full. The answer in this question is Plasmolysis is the reason because it always has water to keep it full.
Answer:
B.The sperm and egg.
<h3>....Hope it helps you.....</h3>