The unit used to measure energy is the

answer:

explanation: 1 joule (j) is the mks unit of energy, equal to the force of one newton acting through one meter. 1 watt is the power from a current of 1 ampere flowing through 1 volt. 1 kilowatt-hour is the energy of one kilowatt power flowing for one hour. (e = p t).

the arctic is a region of the planet, north of the arctic circle, and includes the arctic ocean, greenland, baffin island, other smaller northern islands, and the far northern parts of europe, russia (siberia), alaska and canada.

1 - wave length

2 - amplitude

3 - crest

4 - trough

explanation:

duh.