Please i need someone to answer this for me. its urgent A scientist is trying to determine the age of a rock layer in O points a canyon using Uranium-234, an isotope of Uranium. It has a half-life of about 2,000 years. There originally was 400 radioactive atoms of Uranium-234. If the rock layer tested has 100 radioactive atoms of U-234 left, how many half lives have passed AND how old is the rock layer?
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Match the functions to the cell types ? contraction and relaxation. conducting electrochemical signals fighting diseases carrying genetic material
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Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes
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Which are characteristics of flukes? check all that apply. a they are free living. b they are a type of flatworm. c they reproduce sexually. d they have eyespots. e they are segmented.
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Biology, 22.06.2019 12:50
Aresearcher created three groups based on participants bmi: normal weight, overweight and obese. the hypothesis being tested is that the three groups differ in the mean number of artificially sweetened drinks consumed weekly. which statistical test might the researcher use, assuming a reasonably normal distribution of values.
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Please i need someone to answer this for me. its urgent
A scientist is trying to determine the age...
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