Which of these costs of using coal is a direct cost?

answer:

The cost of using a coal is $330 in America. Some of the external problems which are being caused by burning coal for electricity include toxic coal waste, air pollution, damage to the ecosystem, and water pollution.

Coal can cause air polution and can also put harmful toxins in the waters that supply us with drinking water, and it can cause certian diseases

Explanation:

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organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.