Gravity: The force that pulls objects toward the Earth., Recycle: To use materials again to make new products., Ecosystem: A community of living things and their environment., Environment: Everything that surrounds us including nature, air, water, plants, and animals., Algorithm: A set of steps used to solve a problem (steps to do something)., Temperature: A measure of how hot or cold something is., Energy: The ability to do work or cause change., Cell: The smallest unit of a living organism, Planet: A large object that moves around a star (The Earth, Jupiter...)..

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