Answer:
it would take 100s for the train to crossthe bridge
Answer:
2 a) it is less dense than the water
2 b) it is more dense than the water
3 a ping pong ball is hollow and less dense than the water so it quickly bounces up to the surface of the water
The answer isn't here. All sites say the answer is Only animals are composed of cells. More than one site says this.
Holes I helped
