clean up, , damage, hurt or harm something, environment, the world around us (air, water, nature), garbage dump, a place where people throw rubbish, litter, small pieces of trash on the ground, planet, a big round object that goes around the sun (Earth, Mars…), pollution, dirty air, water, or land, wildlife, animals that live in nature, solar panel, a flat piece that uses sunlight to make electricity, electricity, the power that makes lights and machines work, fossil fuels, things like coal or oil that we burn for energy, alternative energy, clean energy like wind, sun, or water, skylight, a window in the roof, mud, wet, soft earth, beams, long pieces of wood used to build a house, save energy, use less electricity, power, energy to make things work (P - - - - ), protect, keep something safe.

Unit 4

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