Read the following passage and answer the question:
The global average surface temperature has increased by approximately 0.8° C over the last century. Many
countries have experienced increase in rainfall, particularly in those situated in the mid to high latitudes. In
some regions, the frequency and intensity of droughts have increased in recent decades. All these are signs of
climate change, which making it more difficult for mankind survival. Projections of future climate change
have predicted that the global mean surface temperature will rise by 1.4° C to 5.8° C. The frequency of
weather extremes is likely to increase. Global mean sea level is projected to rise by 9 to 88 cm by the year
2100. Changes in climate may affect the distribution of vector species which in turn will increase the spread of
diseases, such as malaria and filariasis, to new areas which lack a strong public health infrastructure.