‌ 12.‌ ‌A‌ ‌‌ ‌‌ ‌is‌ ‌a‌ ‌rising‌ ‌column‌ ‌of‌ ‌hot,‌ ‌solid‌ ‌ ‌ ‌ mantle‌ ‌rock.‌ ‌

Computer models can scientists predict weather. some computer models can show the predicted path of hurricanes. what other events could a computer model warn us of? a) undersea earthquakes , tornadoes, and avalanches b) tornadoes c) avalanches d) undersea earthquakes

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

Why is immigration so important today?