The energy of the sun is converted into energy by the plants. n which situations is work being done?
a hannah leans against her locker, but it doesn’t move.
b andy’s car rolls down a hill with the engine off.
c a wind turbine stands still on a sunny, windless day.
d a balloon expands as it is heated by the sun.
e james pedals a stationary exercise cycle that doesn’t move.

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.

It's absorbs violet light