One of the most important sources of energy is the sun. The energy of the sun is the original source of most of the energy found on earth. We get solar heat energy from the sun, and sunlight can also be used to produce electricity from solar (photovoltaic) cells
1) Renewable energy
energy from a source that is not depleted when used, such as wind or solar power
2) non renewable energy
A non-renewable resource is a natural resource that cannot be readily replaced by natural means at a pace quick enough to keep up with consumption
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:
Salvatore's behavior is consistent with socio-emotional selectivity theory
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<h3><u>Explanation:</u></h3>
The theory that recognizes the change in terms of cognitive influence especially as one age. It maintains that with age people become selective and they tend to invest in goals and activities that nurture their emotional well-being. As people age, they prefer positivity instead of negative information.
Being selective and narrowing social interactions improves "positive emotional experiences" and decreases negative experiences. Furthermore, the theory also recognizes that goals as one age tend to lean towards gaining more knowledge, career planning and others that will have a positive impact in the future.
Answer:
B) The U.S. Navy was concerned about a foreign-controlled company having so much power over their communications.
Explanation:
Marconi was a British company. Although, the company was regarded as one of the best telecommunication companies but the US Navy were concerned that by giving too much control and by depending too much on a foreign country, they might be in a weaker position to negotiate any future deals or may be in a weaker position in diplomatic ties.
