Geography, 31.03.2021 01:00 kmontanab00
John is assisting a geologist who has traveled across the world and collected a few samples. He asks John to classify the samples that can be dated using Carbon-14 and Uranium-235 (or U-235). All organic materials contain carbon and are dated using C-14; inorganic materials are dated using any radioactive element, such as uranium, rubidium, potassium, and thorium, except carbon. Now help John group the samples. Granite, wood piece, Egyptian mummies, Sand stone, gneisses
Answers: 2
Geography, 23.06.2019 15:50
Choose the factors that influence the climate of the u.s. northeast. distance from the equator proximity to large urban areas elevation secluded area distance from a large body of water
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Geography, 23.06.2019 17:30
The poles appear to be slightly flattened in a robinson projection. question 1 options: true false
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Geography, 23.06.2019 18:30
Scientists believe that differences in cause hot, plastic-like rock in the asthenosphere to rise toward earth's surface. a. density c. weight b. magnetism d. composition c. conduction. d. density.
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Geography, 23.06.2019 22:30
Plz hury on a timer which statements explain what happens at deep-ocean trenches? check all that apply. crust is formed. mountains are formed. seafloor spreading occurs. crust becomes molten rock. denser plates slide under lighter plates.
Answers: 1
John is assisting a geologist who has traveled across the world and collected a few samples. He asks...
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