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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?
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Biology, 22.06.2019 17:00
Achemical that is released by an animal as a signal to other members of the same species is called a pheromone. t or f
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Biology, 22.06.2019 22:00
Vascular plants like this one use sunlight to make food through te process of photosynthesis most food a sugar is made in the plant's leaves how does te plant move the sugar to other parts?
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How is nuclear energy generated? ...
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