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A substance that is naturally present in the Earth, for example gold and salt.
mineral
Small enough to be placed in the hand while being used.
handheld
To cover a larger and larger area.
spread
A device that a liquid or gas is passed through in order to remove unwanted materials.
filter
Buildings with glass sides and a glass roof for growing plants in.
greenhouse
Groups of people who live together.
colonies
To move around a much larger object, especially a planet or star.
orbit
The Earth goes around the Sun in an ________.
Scientists discovered a rare ________ deep underground.
The disease began to ________ quickly across the country.
We grow tomatoes and cucumbers in a ________ during winter.
The water passes through a ________ before it is safe to drink.
Ants live in large ________ and work together.
I use a ________ game console when I travel.
