Ques:Energy enters ecosystems in the form of sunlight or chemical compounds, and sunlight is energy released from fusion reactions in the sun. Given these facts, what do ecosystems use as energy among the following options: - Nutrients - chemicals - heat - wind - trees - food - glucose - fusion

Ans:fusion
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Ques:Viruses contain DNA but not much else, and dNA is an abbreviation for deoxyribonucleic acid. Given these facts, what contains deoxyribonucleic acid but not much else. among the following options: - minerals - bacteria - loose soil - pollen - viruses - anemia - PDAs - vertebrates

Ans:viruses
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Ques:The movement of tectonic plates causes volcanic eruptions, and volcanic eruptions can also cause tsunamis. Given these facts, what can cause tsunamis among the following options: - cloud movement - The area was once underwater - sonic booms - energy of moving objects - the movement of tectonic plates - deadly and devastating - mountain formations - wind and erosion

Ans:the movement of tectonic plates
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Ques:Shivering occurs when many muscles contract a little bit all at once, and heat production is increased by shivering and non-shivering thermogenesis . Given these facts, when many muscles contract a little bit, simultaenous, it produces: among the following options: - forces - heat - cold blooded - sweat - electrical energy - Energy - pain - thermal displacement

Ans:
heat
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