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?

Explanation:

1. Costly, as there are less and less fossil fuels available, the price rises higher and higher. Solar Energy is 60% cheaper than coal and oil, while expensive to first put on it is a great investment.

2. Availability, wind is abundant in Europe making wind power very easy to make at a cheap cost

3. Polluting the environment, if fossil fuels keep getting burned by 2070 there will be in-reversible climate change.

answer is b shrapnel injuries

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answer: a federal government has final authority on interstate/inter provincial  and international affairs, a confederation is one where the central/national government or authority is governing body what does not have final say over the same matters. hopefully this and i will try again if you don't like this answer : )

best of luck!