Which is not found in the northeast region? a major industrial center the greatest population concentration special economic zones the capital

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

These factors threaten north americas ecosystems

What events caused the united states to intervene in southwest asia?