Photosynthesis - Process by which plants use the Sun to grow, Chlorophyll - Pigment that gives plants their green colour, Earth - Third planet in the solar system, Lift - Name of force that keeps the plane up, Blubber - Layer of fat that keeps animals warm in the cold, Gravity - Name of force that keeps the plane down, Drag - Name of force that slows the plane down, Thrust - Name of force that makes planes go faster, Skin - Largest organ in human body, Water - What are clouds made out of, Atmosphere - Protective layer of gas that covers the Earth, Ozone - Layer that absorbs sun's harmful rays, Nucleus - Referred to as the "Brain" of the cell, Keratin - Material that makes up our nails and hair, Hydro-Electricity - Electricity generated by water is referred to as, Wings - Part of the plane that deals with the "drag" force, Engine - Part of the plane that provides the "Lift" force, Circulatory - Name of body system that regulates blood circulation, Nervous - Name of body system that regulates touch and physical feelings,

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