Which of these sources of power can reduce the emission of carbon dioxide? oil wind coal natural gas.. this one

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

Do larger countries receive more money in remittances than smaller countries

What happen to eastern europe after ww2