Question

Decide if the following sentences are true or false. You have to correct the false ones.
a) There are four kinds of coal depending on their carbon content.
b) Coal is usually found in liquid state.
c) Fossil fuels are the result of the decomposition of plants and animals from the past.
d) Petroleum is the cheapest source of energy.

Answer 1

Answer:

a true

b false

c true

dfalse

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Answer 2

• true
• false, it is found in solid state
• true
• no , it is not the cheapest sorce of energy solar is cheapest source of energy