one of two fractions whose product is 1

                     Ex: 5/3  and  3/5

                      1/2  and  2/1

                      4/9  and  9/4

an object in space that circles around another object

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soldiers who stand at watch for danger or for people without permission to pass

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a person who loves and defends his country; a colonist who was against British rule at the time of the Revolutionary War

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to act against something or someone

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the right to act as one chooses; freedom from the control of others

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promoting radical political or social change

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someone who works for another person in order to learn a trade/skill

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a public sale in which something is sold to the person who offers/bids the most money

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a skilled worker who makes things by hand

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the system of objects of, or around the Sun

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the smashing together of particles to create new particles

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an object that crosses paths with Earth and enters Earth's atmosphere

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a mixture of frozen gases, ice, dust, and rock that moves in an irregular circle around the sun

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a rock that goes around the sun

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an object that circles around its planet

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a tool used to see distant or faraway objects

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an object in space that makes its own light and heat

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