Answer:
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One of the amazing things about alternative energy resources is that they are renewable, unlike fossil fuels. The use of fossil fuels, such as coal and natural gasses, can contribute a lot to pollution since fossil fuels are usually processed through factories and plants. With water, wind, and solar energy, it is much easier to gain electricity with those methods rather than others, and much cheaper.
Weak acids and bases are indicators. All indicators are weak acids. An acid-base conjugate pair has different colors. Any indicator changes color when the pH of its solution is 7.
a) A warm air mass rises above a cold air mass during a warm front, but two cold air masses surround a warm air mass during an occluded front.
Answer:
Gradual change with a passage of time is called evolution
Explanation:
