Answer:
Many people do not realize that helium is a non-renewable resource. It is made on earth via nuclear decay of uranium, and it is recovered from mines. Once it is released into the atmosphere it becomes uneconomical to recapture it, and eventually atmospheric helium will escape earth altogether because it is so light.
Explanation:
By the end of the bloody, all-day battle, Harold was dead and his forces were destroyed. He was the last Anglo-Saxon king of England, as the battle changed the course of history and established the Normans as the rulers of England, which in turn brought about a significant cultural transformation.
Maslow's hierarchy of needs<span> is </span>one<span> of the best-known theories of motivation. Take a ... The lowest </span>levels<span> of the pyramid are made up of the </span>most basic needs<span>, while the </span>most<span> complex </span>needs<span> are at the top of the pyramid. ... </span>Satisfying<span> these lower-</span>level needs<span> is important in order to avoid unpleasant feelings or consequences.</span>