Q: What is an alloy of both tin and copper? Read this paragraph and choose the correct option from the provided answers: Archaeological evidence suggests that people have been using tin for at least 5500 years. Tin is used to form many useful alloys (mixtures of two or more metals). Bronze is an alloy of tin and copper, while solder is an alloy of tin and lead. Choices: - Cobalt - silver - Aluminium - bronze A:
bronze
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Q: When represented by a single letter dominant alleles are represented by what case letter? Read this paragraph and choose the correct option from the provided answers: Choices: - mixed letters - numeral - lowercase - uppercase A:
uppercase
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Q: Each nitrogenous base has one or two rings that include which atoms? Read this paragraph and choose the correct option from the provided answers: Choices: - oxygen - hydrogen - carbon - nitrogen A:
nitrogen
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Q: The actinides are all what type of elements? Read this paragraph and choose the correct option from the provided answers: actinide: The actinides are the 14 elements from thorium (atomic number 90) to lawrencium (atomic number 103). The sublevel is in the process of being filled. The actinides are all radioactive elements and only the first four have been found naturally on Earth. Choices: - large - nuclear - multiple - radioactive A:
radioactive
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