Why do Europeans have to invest in new sources of energy? why do you think that Europeans are not content with fossil fuels being a long-term energy source

Europeans could think about future outcomes on how the earth will be. For example, global warming. Also, it could be cheaper if they invest in solar power or wind, instead of oil and coal.

Explanation:

Hey there! I will give my reason, if you have any questions feel free to ask me in the comments below.

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well considering i can't see the graph, it's probably prices

two jet streams that directly affect the formation of weather in the continental part are a polar jet and a subtropical jet. they are responsible for the transportation of weather systems, which directly affect people. the polar front is the boundary between cold air from the north pole and warmer equatorial air. both the polar jet and the subtropical jet blow from the west to the east, and follow the boundary between cold and warm air.

the strongest jet streams are polar jets, while subtropical jets are somewhat weaker.

the right answer is c. the polar jet stream is generaly stronger than the subtropical jet stream.