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Answer:
A star's life expectancy depends on its mass. Generally, the more massive the star, the faster it burns up its fuel supply, and the shorter its life. ... A star with a mass like the Sun, on the other hand, can continue fusing hydrogen for about 10 billion years.
C) Opposite magnetic poles attract, while like magnetic poles repel
Both are ...
-- transverse
-- electromagnetic
-- waves
-- have the same speed
-- used for communication
-- regulated by the FCC
-- carry energy from place to place