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diatomaceous earth diatomaceous earth
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The Earthly Paradise The Earthly Paradise
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brown earth brown earth
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Lincoln Near-Earth Asteroid Research Lincoln Near-Earth Asteroid Research
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alkaline earths alkaline earths
alkaline earths , oxides of the alkaline-earth metals , especially of calcium, strontium, and barium. They are not readily soluble in water and form solutions less basic than those of alkalies.... Read more
Gaia Hypothesis Gaia Hypothesis
Gaia hypothesis The Gaia (pronounced GAY-ah) hypothesis is the idea that Earth is a living organism and can regulate its own environment. This idea argues that Earth is able to maintain conditions that are favorable for life to survive on it, and that it is the living things on Earth that give the... Read more
rare earths rare earths
rare earths in chemistry, oxides of the rare-earth metals . They were once thought to be elements themselves. They are widely distributed in the earth's crust and are fairly abundant, although they were once thought to be very scarce. Generally, the name of an earth is formed from the name of its... Read more
terrestrial planet terrestrial planet
terrestrial planet the earth or a planet that resembles the earth in its physical characteristics. The terrestrial planets in the solar system are the earth , Mercury , Venus , and Mars . These planets are approximately the same size, with the earth the largest. They are considerably denser... Read more
Earths Interior Earths Interior
EARTH'S INTERIOR CONCEPT For the most part, this book is concerned with geologic, geophysical, and geochemical processes that take place on or near Earth's surface. Even the essay Plate Tectonics, which takes up one of the central ideas in modern earth sciences, discusses... Read more
Earth tides Earth tides
Earth tides The gravitational attraction between the Earth and Moon keeps them in orbit about their common centre of mass, which is a point within the Earth 4670 km from the centre. Both the Earth and the Moon are nearly spherical, which means that the total attractive force between them is nearly... Read more

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