Answer:
wave is a disturbance that travels through space and matter transferring energy from one place to another. When studying waves it's important to remember that they transfer energy, not matter. There are lots of waves all around us in everyday life.
Answer:
Tropism can be called positive or negative. Positive tropism is movement or growth towards a stimulus, whereas negative tropism is the movement or growth away from a stimulus.
Explanation:
Cells,tissue,organ organism,organ system
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