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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
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Geography, 22.06.2019 17:30
Describe how ocean currents can affect a moving object βββ
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Geography, 22.06.2019 21:00
All of the following statements about the biosphere are true except: a. light and heat from the sun do not affect the biosphere. b. the biosphere gets resources from earth's crust, hydrosphere and atmosphere. c. like "biology", the name for the biosphere comes from the greek word for life. d. the biosphere includes all living organisms on earth's surface.
Answers: 1
Geography, 23.06.2019 00:30
What would be the distance of all the planets to the sun in astronomical units?
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Which is more stable food webs or food chains...
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