Scientists estimate that _________ __________ _______account for at least 17% of all human-created greenhouse gas emissions
Fill in the blanks with correct word
tropical forest fires
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Since the start of the 21st century, ________ has annually received more global voluntary migrants than any other country
A) the United States B) Germany C) Russia D) China
A 1000-kg car and a 2000-kg car are hoisted the same distance in a gas station. Raising the more massive car requires
A) less work. B) as much work. C) twice as much work. D) four times as much work. E) more than four times as much work.
Which of the following changes in conditions indicates heating of the rock?
A. from D to A B. from A to B C. from B to C D. from C to D E. None of these choices are correct.
During photosynthesis within plants, ________
A) sugars and carbon dioxide are produced B) the high-quality energy from sugar is converted to heat and light C) water and carbon dioxide are consumed D) oxygen and carbon dioxide are consumed E) carbon dioxide and oxygen are produced