Here's for one of them:
Type: Nuclear
Extraction: Uranium (the fuel for nuclear energy) is typically mined using open pit or sub-surface mining. Australia, Canada, Kazakhstan are where the world's largest deposits are.
Benefits: Low cost (if you don't count building the power plant), reliable (unlike wind & solar energy which comes and goes, nuclear is readily available), no carbon emissions, produce more energy than coal power plants (most popular energy source), no air pollutants emitted (all other nonrenewable sources, aka. coal, oil, and natural gas, release harmful air pollutants)
Risks to environment: Radioactive wastes require to be safely secured away for thousands of years before they can reach safe levels, nuclear accidents can happen, mining uranium cause land disturbance, thermal pollution in nearby bodies of water or wherever cooling water is released (this can lead to dissolved oxygen levels decreasing in that body of water which can suffocate aquatic life)
Other info: Nuclear energy makes up 10% of the world's energy consumption.
Answer:Making Economic Decisions
Individuals are forced to make trade-offs every time they use their resources in one way and not in another. The cost of making a trade-off is known as opportunity cost—the value of the next best alternative that has to be given up to do the action that is chosen.
Explanation:
I'm 100% sure that I've got all the answers correctly, as I've checked them all using a book. The answers are in bold. I hope it helps. Here are the answers:
1. J. Mesopatamia is an a<span>ncient region of southwest Asia between the Tigris and Eurphrates Rivers
2. They invented the wheel. I'm pretty sure that the wheel was invented by </span>I. The Sumerians.<span>
3. Sumerian writing system is called </span><span>D. Cuneiform.
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4. </span>G. Amorites is a<span> semetic group that moved into the fertile crescent after 2000 B.C.
5. Founders of algebra and astronomy are </span><span>C. Babylonians.
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6. Sumerians were the first people to use this shape for religious structures. It's definitely a </span><span>A. Pyramid.
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7. </span>F. Ziggurat is <span>a step pyramid.
8. </span><span>H. Clay is the m</span><span>ost common building element of ziggurats.
9. Much sumerian are was created as </span>B. Propaganda.<span>
10. Renowned sumerian ruler is </span>E. Gudea of Lagash.
