exhaustion (they are finite), e.g. oil and gas. Examiner’s tip: remember that two of the main primary energy sources are coal and natural gas, but they also produce secondary energy (electricity). Coal Produced by deep or open cast mining. Releases greenhouse gases. Heavy and bulky to transport. Typical mistake: many candidates think that oil is still a major fuel in the generation of electricity, but in fact it has been superseded by gas. Oil and natural gas Fields are often in environmental…
Words 5511 - Pages 23