The heart of humans differ from fish heart in what way. (A) Fish has one circular path but a human heart has two circular paths. (B) human heart has one circular path, but a fish heart has two circular paths.

Idon’t know i kinda don’t like chemistry

When the ball is rising up, it gains kinetic energy. when the ball reaches the very top, it will have all potential energy, until it falls back down and gains it kinetic energy. finally when you catch the ball or it falls back down, it would have gained its potential energy back.

I’m going to go with b!

By water evaporation from the leaves is created a negative pressure at the top of the tree that promotes the ascension  of the water through channels that are called xylem. there are also two molecule forces that are involved: the intra-water molecules cohesion (water molecules stick to each other) and the adhesion when the water molecules stick to the channels they are running in. this is what enables water to go from the roots to the top of a tall tree.