Biology, 14.05.2021 22:10 shjsmbee8177
Why are radioactive materials used to date rocks?
O A. Radioactive materials are not found in rocks.
O B. Radioactive materials grow in layers.
O C. Radioactive materials come from the moon.
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D. Radioactive materials have known half-lives.
Answers: 2
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What are the steps of how energy is transformed in plant cells?
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Which events are likely to be catastrophic to an ecosystem? select the three correct answers.a-hurricane.b-steady population growth.c-seasonal flooding.d-introducing of an aggressive invasive species.e-tsunami.
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Biology, 22.06.2019 11:30
Ihave no idea how to solve these. plus there's another question that is 2) a 10 kilogram meteorite is collected in space and brought back to earth. it is composed of 1.25 kg of uranium-238 and 8.75 kg of lead-206. how many u-238 half lives have passed? what is the approximate age of the meteorite?
Answers: 1
Why are radioactive materials used to date rocks?
O A. Radioactive materials are not found in rocks...
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