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Geography, 22.06.2019 14:40, thezbell
Geologists know that potassium-40 decays to argon-40, with a half-life of 1.3 billion years. if an analysis of a feldspar crystal in a sample of granite shows that 75 percent of the potassium-40 atoms have decayed to form argon-40, what is the age of the granite
Answers: 2
Geography, 23.06.2019 01:00, kimjooin02
Which of the following insects is a decomposer? a. mosquito. b. caterpillar. c. beetle. d. none of the above.
Answers: 2
Geography, 23.06.2019 09:00, deojahnaeb37
Read the article about the fraser river, one of the most important rivers in canada. what is the most important species of fish in this river? why are the numbers of these fish declining?
Answers: 1
Transhumance is least common in a. turkey b. belgium c. northern spain d. greece e. north africa...
Mathematics, 14.01.2020 04:31
Mathematics, 14.01.2020 04:31
Mathematics, 14.01.2020 04:31
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Physics, 14.01.2020 04:31
Mathematics, 14.01.2020 04:31