The heat that remains inside the Earth from its creation and radioactive decay are its main heat sources.
The deep earth receives heat from three main sources: (1) heat left over from the planet's formation and accretion, (2) frictional heating brought on by denser core material sinking to the planet's centre, and (3) heat from radioactive element decay.
The energy produced when unstable atoms decay is known as radioactivity, and it is a substantial contributor to the Earth's heat. The main source are the radioactive isotopes of uranium-235 (235U), uranium-238 (238U), potassium-40 (40K), and thorium-232 (232Th) in the Earth's mantle.
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Answer:
The United States established diplomatic relations with Colombia on June 19,1822, following its independence from Spain. Colombia is a middle-income country and one of the oldest democracies in Latin America. The United States and Colombia share a commitment to promoting security, prosperity, and democratic governance in Colombia and across the Western Hemisphere.
Explanation:
for (1)
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