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, 22.06.2019 13:00, makiahlynn706
The increase of pollutants from in mexico has raised concerns about garage to health and the environment
Answers: 3
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, 24.06.2019 03:00, Amari1010
Technology has affected regional settlement patterns in what ways? choose all that apply. climatic improvement strategies have improved crop productivity. mechanized agricultural methods have improved agricultural productivity. participation in the global economy has increased urbanization. population shifts from urban to rural areas has increased as a result of petroleum production. settlement areas have increased as a result of improved water storage and delivery systems.
Answers: 3
John is assisting a geologist who has traveled across the world and collected a few samples. He asks...
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