Saturn is the most similar
Average x = (5-1)/2 = 2
<span>average y = (-2+3)/2 = 1/2
</span>so
<span>(2 , 1/2)</span><span>
</span>
The main sources are humans which is why it is stated that the global warming is man made. The levels have increased beyond all measure, increasing since the 1950s by a 100 CO2 parts per million, and it keeps increasing by 2ppm on a yearly basis. The statistics from the industrial revolution era are not much different and show how much we've increased the CO2 in modern times.
