What is a major drawback of using fossil fuels?
a. they warm the planet
b. they are flammable
c. they release oxygen when burned
d. they contain no greenhouse gases

A, they warm the planet

integrated circuit (ic) is defined as a set of electronic circuits on one small flat piece of semiconductor material, normally silicon. a functional electronic circuit requires transistors, resistors, capacitors, inductors, etc., and the connections between them.

the answer u all are looking for is 4000000000000000000000 million years.