Fossil fuels are source of electricity and heat for homes. Hydro-power is used to create large volume of electricity. Solar power use light reflection mirrors to trap the energy and convert into electricity. Bio energy is used as an alternative to traditional oil. Geothermal power is derived from the heat beneath earth's surface.
Sex ratio is the difference between males and females in a population. In China, sex ratio is an issue because of how favored males are. There is cases of femicide and girls are usually put up for adoption leading to an unbalanced sex ratio.
Answer: B.Portuguese
Explanation:
At a close second to Spanish is Portuguese, with approximately 206 million speakers in South America. Brazil is home to most of these speakers.
