SURGE - A sudden and great increase in the height of the level of the sea. , CLIFFTOP - An area of ground at the top of a cliff (a high area of rock with a very steep side, often on a coast), POLLUTION - Damage caused to water, air and environment by harmful substances or waste., GREENHOUSE - Type of effect which produces an increase in the amount of carbon dioxide and other gases in the atmosphere (=mixture of gases around the earth), that is believed to be the cause of gradual warming of the surface of the earth. , TYPHOON - A violent wind in the ocean that has a circular movement. , TWISTER - A tornado or a whirlwind. , FROST - The thin, white layer of ice that forms when the air temperature is below the freezing point of water, especially at night., FORECASTER - A person who tells you what weather conditions are expected to be like., HARVEST - To pick and collect crops, plants, animals, or fish to eat. , HARNESS - To collect and control something. , FOSSIL FUEL - (Two words) Fuels, such as gas, coal, and oil, that were formed underground from plant and animal remains millions of years ago. , RENEWABLE - Type of energy that is produced using the sun, wind, etc., or from crops, rather than using fuels such as oil or coal. , DAM - A wall built across a river that stops the river's flow and collects the water, especially to make a reservoir (=an artificial lake) that provides water for an area. , HYBRID - Types of vehicles that use more than one means of propulsion - that means combining a petrol or diesel engine with an eletric motor to consume less fuel and emit less CO2.,

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