Energy is the (1) ________ to do work and is required for life processes. An energy (2) ________ is something that can produce (3) _______, power life, move objects, or produce electricity. Matter that stores energy is (4) _______ a fuel. Human energy (5) _______ has grown steadily throughout human history. Early humans had modest energy requirements, mostly food and (6) ______ for fires to cook and keep warm. In today's society, humans consume as (7) ______ as 110 times as much energy per person as early humans. Most of the energy we use today come from (8) ________ fuels. However, they have a disadvantage in that they are (9) _________ on a human time scale, and cause other potentially harmful effects on the environment. In any event, the exploitation of all energy sources, ultimately rely (10) ______ materials on planet Earth
Energy is the (1) ___capacity _____ to do work and is required for life processes. An energy (2) ___resource _____ is something that can produce (3) ___heat____, power life, move objects, or produce electricity. Matter that stores energy is (4) ___called ____ a fuel. Human energy (5) ___consumption ____ has grown steadily throughout human history. Early humans had modest energy requirements, mostly food and (6) ___fuel ___ for fires to cook and keep warm. In today's society, humans consume as (7) ___much___ as 110 times as much energy per person as early humans. Most of the energy we use today come from (8) ____fossil ____ fuels. However, they have a disadvantage in that they are (9) ___ non-renewable ______ on a human time scale, and cause other potentially harmful effects on the environment. In any event, the exploitation of all energy sources, ultimately rely (10) __on ____ materials on planet Earth
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