hydroelectric power - Power generated from moving water., geothermal energy - the energy produced by heat within the earth, population density - Number of individuals per unit area, reservoir - a large natural or artificial lake used as a source of water supply., solar power - energy from the sun that is converted into thermal or electrical energy, climate - Overall weather in an area over a long period of time, weather - day-to-day conditions of the atmosphere, including temperature, precipitation, and other factors, precipitation - Any form of water that falls from clouds and reaches Earth's surface., temperature - A measure of how hot or cold something is., climate change - a change in global or regional climate patterns, tsunami - A giant wave usually caused by an earthquake beneath the ocean floor., global warming - A gradual increase in average global temperature, biodiversity - the variety of life in the world or in a particular habitat or ecosystem., agricultural - the science or practice of farming, including cultivation of the soil for the growing of crops and the rearing of animals to provide food, wool, and other products., subsistence agriculture - the production of food primarily for consumption by the farmer's family, urbanization - Movement of people from rural areas to cities, megalopolis - a region in which several large cities and surrounding areas grow together, infrastructure - the basic physical and organizational structures and facilities (e.g., buildings, roads, and power supplies) needed for the operation of a society or enterprise., landlocked - completely surrounded by land with no direct access to the ocean, embargo - an official ban on trade or other commercial activity with a particular country., atomic bomb - bomb dropped by an American bomber on Hiroshima and Nagasaki destroying both cities, telescope - An optical instrument that forms enlarged images of distant objects., magnetic compass  - Chinese invention that aided navigation by showing which direction was north, printing press - 15th-century invention revolutionized the ability to print information which in turn affected the speed of the spread of information itself.,

Unit 7: Technological Advances in Society

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