Geography, 15.12.2020 22:40 dixonkaleo9
What's responsible for the formation of sunspots in the photosphere? please help
Nuclear fusion
Earth's magnetic field
The sun's magnetic field
Gravity
Answers: 1
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, 24.06.2019 15:30
1. most of russia lies in a environment. a) alpine b) subarctic c) humid continental d) humid subtropical 2. the highest population density is found in the part of russia a) eastern b) northern c) southern d) western
Answers: 1
What's responsible for the formation of sunspots in the photosphere? please help
Nuclear fusion
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