The answer is international trade. Globalization has brought a lot of benefits to many countries and one is the increase in international trade. It has led to increased flows of inward investment between countries. Also, increased trade leads to creation of more employment to countries that are involved.
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.
I think watermark because it has to do with a body of water