Ya it is real because we are living in a same planet every thing is linked with each other. it was the great hypothesis of the world one does pollution and all of us have to face it .
I believe the answer is "D"
HI is most noticeable during the summer and winter. The main cause of the urban heat island effect is from the modification of land surfaces. Waste heat generated by energy usage is a secondary contributor. As a population center grows, it tends to expand its area and increase its average temperature.
D, motion of tectonic plates
