You are enjoying a spring day but expect a storm to arrive soon. as the storm arrives and the rain begins to fall, you notice that the temperature drops dramatically. most likely, you have just experienced the arrival of a
a. stratospheric eventb. intertropical convergencec. cold frontd. hadley cell

You are enjoying a spring day but expect a storm to arrive soon. As the storm arrives and the rain begins to fall, you notice that the temperature drops dramatically. Most likely, you have just experienced the arrival of a cold front.

That's why rain occurs. A cold front crushes with a warm front. With the necessary pressure and temperature condition, the rain started.

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d. cellulose and starch