Answer:
supernova
Explanation:
When a high-mass star has no hydrogen left to burn, it expands and becomes a red supergiant. While most stars quietly fade away, the supergiants destroy themselves in a huge explosion, called a supernova. The death of massive stars can trigger the birth of other stars.
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Answer:
Renewable
Explanation:
Renewable resources include biomass energy (such as wood, sewage, and ethanol), hydropower, geothermal power, wind energy, and solar energy.
Wind, water, and solar energy
Answer:
<em>Natural causes of earthquakes </em>
Explanation:
Earthquakes are triggered<em> by the rapid energy release in some of the Earth's small rocks. Energy can be released by elastic stress, gravity, chemical reactions, or even massive body motion.</em>
The release of elastic strain is the most important cause of all these, because this form of energy is the only sort that can be stored in sufficient quantities on Earth to create major disruptions. This type of energy release related earthquakes is called tectonic earthquakes.
