Photosynthesis - The process by which green plants make their own food using sunlight, water, and carbon dioxide., Equator - A line that divides the Earth into the Northern and Southern Hemispheres., Archipelago - A group or chain of islands., Democracy - A system of government in which people choose their leaders by voting., Volcano - A mountain that releases molten rock, ash, and gases from inside the Earth., Oxygen - A gas that humans and animals need to breathe., Renewable Energy - Energy that can be naturally replaced, such as from the sun or wind., Global Warming - The gradual increase in the Earth’s temperature caused by pollution and greenhouse gases., Internet - A global system that connects millions of computers and allows sharing of information., Gravity - The natural force that pulls objects toward the center of the Earth.,

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