The burning of fossil fuels is having a negative effect on the planet via global warming. in 2006, western europe experienced some of the hottest weather in history. which transitional word best completes the passage? yes, i know that this is in the wrong subject, but nobody is in english, and i need the answer asap.

Many organizations release indexes used to measure the development of the world's countries. as we learned in this lesson, these indexes measure many factors, from life expectancy to happiness. in your opinion, what are the three most important factors we can use to determine how developed a country might be? explain your answers in a few sentences.