D an average train goes 300 km/h or 190-220 mph
Answer is: <span>A. Fracking reduces U.S. dependency on oil and gas from other countries..
Other answers are not bad side of fracking.
</span>Fracking is technique in which rock is fractured by a pressurized liquid and is used in <span>to create cracks in the rock formations through which </span>natural gas<span>, </span>petroleum<span> will flow more freely.</span>
Number 9 adding oil lubricates the chain making it easier to pedal. Also the oil prevents rusting
Answer:
The stable isotopes of carbon are carbon-12 (12C) and carbon-13 (13C).
I hope this helps! :)