C) the fighting of the Persian wars
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The correct answer is A. Increased use of pesticide.
The name 'green revolution' is very misleading, because it makes you believe that is something positive about the nature. In fact, it is something that made a lot of harm to the environment with pollution and increased erosion caused by the usage of chemical fertilizers and pesticides and herbicides, caused problems in the societies because a lot of crops needed for people to feed themselves where destroyed so that other plants can be produced.
The Crust is the layer that experiences the least amount of pressure
Sugar and salt. Substances that do not dissolve in water are called insoluble.
