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Earth is estimated to be 4.6 billion years old and ever-changing. Scientists have organized Earth’s history into geologic time periods. These time periods include the Precambrian, Paleozoic, Mesozoic, ...
"En los años 70, James Lovelock y Lynn Margulis formularon una idea que explica muchas cosas sobre nuestro planeta: La hipótesis de Gaia." encontrarás en este video una ...