<span>which of those can we not get back once it has been used, the answer is oil or petroleum</span>
Answer: Either electromagnetic radiation or energy is the answer to your question.
<h3>The metre is the length of the path travelled by light in vacuum during a time interval of 1299 792 458 of a second.</h3>
Work = (force) x (distance)
Work = (21 Newtons) x (9 meters) = 189 Joules
Power = (work done) / (time to do the work)
Power = (189 Joules) / (3 sec)
Power = (63 watts/sec)
Power = 63 watts (D)
Plants are autotrophs
Animals are heterotrophs
