Political revolts in south america have been the result of all that apply) -economic limitations -industrialization -social inequality -urbanization

How are farmers that use no plow farming methods able to improve air quality for the people around the fram

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

Fossil fuels such as coal, oil, and natural gas were formed over millions of years by