When the Milky Way was in its earliest ages, hydrogen, helium and other common elements were the only ones around
True
False
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Eastern europe and parts of northern europe have which of the following climates?

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

Solve the equation.8 - 2x = -8х + 14