Biology, 29.07.2019 05:00 oseniiyabode123

What is the relationship between a mutation and a gene?

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Biology, 22.06.2019 09:00, triss6

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Biology, 22.06.2019 11:30, annsmith66

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?

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Biology, 22.06.2019 13:00, archiecom55

Sequence how oxygen accumulated in the atmosphere and the effect it had on life by completing the flowchart

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Biology, 22.06.2019 15:00, Gunn2368

Which of the following must be true for a fossil organism to be useful as an index fossil? a. the fossil organism must be widespread geographically. b. the fossil organism must be abundant. c. the fossil organism must be limited to a short span of geologic time. d. all of the above.