Respuesta :

Correct ones are

  • Technical improvements that have made alternative energy sources more practical to use
  • Increase in concern for environment.

why?

Fossil fuels are hydrocarbons

  • Hydrocarbons on burning with oxygen releases harmful carbon dioxide .

What factors do you think contribute to the increased use of alternative energy sources during the last 40 years? CLICK ALL THAT APPLY

  • Technological improvements that have made alternative energy sources more practical to use ✓

⇢ Technology has played a vital role in bringing out the best of alternative energy sources which helped in making a lot of things possible.

  • Increasing demand for fossil fuel use and demand for cars with low gas milage ✓

⇢Due to the high number of population with vehicles , the demand for fossil fuel is unattainable and during the time and to save fossil fuels for the next generation, alternative energy sources are eureka moment

  • Increase concern for the environment ✓

⇢ Alternative energy sources are a little step to save our environment which has been polluted by many toxic gases & particles.

  • Increase in impacts of climate change

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