(a) very frequent use of something so that it stops being effective; an over-use.
Once this initial energy is added, the wave travels through the medium until all its energy is transferred. In contrast, electromagnetic waves require no medium, but can still travel through one.
Answer:
Two
Explanation:
Because there is two cells in each thing
Diffusion is the movement of substances from high to low concentration
osmosis is the diffusion of water through a semipermeable membrane from high to low water concentration
The correct answer is evaporation.
