I'm sorry i do not know the answer, but in the picture you took i noticed how it said hint try clicking on that and I also noticed it said chapter 2 at the top of the page if that is a reading source that has information i would read through that or put a link to that so we can read it and see if it helps us get the most accurate answer.
A wave will travel only as long as it has energy to carry. The energy makes a wave travel and it will stop traveling as soon as the energy is dissipated.
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Definition of Province and State: Province is defined as a unit of a country that is created with administrative point of view. A state is also defined as a smaller territory that adds up to make a federation, such as the US.
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The origin of the aurora begins on the surface of the sun when solar activity ejects a cloud of gas.