Ques:Q: What types of living beings have water vascular systems and unique tube feet? Choices: - diatoms - mollusks - Ducks - echinoderms A:

Ans:echinoderms
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Ques:Q: The scientific method is a method of research with defined steps that include experiments and careful what? Choices: - discovery - estimation - consideration - observation A:

Ans:observation
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Ques:Q: What do power plants burn to generate electricity? Choices: - nuclear fuel - biofuel - timber - fossil fuels A:

Ans:fossil fuels
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Ques:Q: Where is gabbro found? Choices: - volcanoes - forest floor - wetlands - oceanic crust A:

Ans:
oceanic crust
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