Answer:
D.
Explanation:
1 .Climate change; it is the significant, long-term changes in the global climate.
2. The global climate is the connected system of sun, earth and oceans, wind, rain and snow, forests, and savannas, etc and everything by with people deals.
3. Climate change have harmful effect on human health like; heatstroke and heat-related illnesses , schistosomiasis and many other.
4. Climate change is the big issue these days which have many harmful effects on human life.