Answer:
Can I see what reasons cuz I never done the reasons only statement
The world is improving energy efficiency and vehicle fuel economy and also increasing wind and solar power.
The inner core is mainly made up of hot metals
The answer may be B, but i may be incorrect.
In the 31 countries at the bottom of the list, 28 of which are in sub-Saharan Africa, a person can hope to live on average only 46 years, or 32 years less than the average life expectancy in countries of advanced human development, with 20 years slashed off life expectancy due to HIV/AIDS.
