change in appearance of the Moon as viewed from the Earth, due to the relative positions of the Moon, Earth, and Sun
mercury, venus, earth, mars, jupiter, saturn, uranus, neptune
something that may increase or decrease (like the tides of the sea)
rock formed by the solidification of molten magma
rock that in its molten form (as magma) issues from volcanos
Positively charged particles
the particles of the nucleus that have no charge
the gradual movement and formation of continents (as described by plate tectonics)
the geographical area under the jurisdiction of a sovereign state
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