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Geography, 22.06.2019 14:40
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 00:30
Equilateral triangle pbj is inscribed in a circle as shown. determine the measure of arc pjb.
Answers: 1
Geography, 23.06.2019 15:50
Which of the following statements best describes what is occurring in the land surrounding the sahara desert? a desertification is increasing, and the desert is expanding. b. fewer people are trying to farm in this semiarid region. c. the desert is shrinking with the increased use of irrigation. d. increased urbanization has resulted in decreased deforestation. select the best answer from the choices provided mark this and return save and exit next submit
Answers: 3
Geography, 23.06.2019 21:00
All of the following are extrusive landforms except a. batholiths. b. lava plateaus. c. shield volcanoes. d. geysers.
Answers: 3
How does a compass rose indicate the map...
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