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Wind Energy is one of the cleanest, if not, the cleanest source of renewable energy. It is easy to collect and has zero emissions.
However, the downside to win energy is the cost of building thousands of windmills. Also, the wind may not be blowing on certain days, and therefore, no energy will be collected.
Hydroelectric Power is another source of clean, renewable energy. Hydroelectric plants are located behind waterfalls, such as Niagra/Horseshoe falls. They generate very large amounts of energy.
However, Hydroelectric plants are very expensive to build and difficult to construct.
Solar Farms like this, generate massive amounts of energy with no emissions. A plant like this collects large amounts of energy, but is very expensive to build. A farm has several hundred to thousands of these panels.
Gold is a very versatile material. While most people have only heard of it being used for fine jewellery or status, it has many other useful purposes, like synthetic diamonds. Gold is used for electronics and computer boards. It can also be used in small amounts, to mix with other materials to form stronger compounds. It is also still used in developing parts of the world as currency.
Coal is the most widely used resource in the world today, next to gasoline. You can burn it for heat energy, like vintage trains, among other things. However, coal produces a lot of air pollution when burned, and the U.S has been trying to cut down on coal use for a long time.
What you see here is one of the most abundant resources, with a wide variety of uses. Wood covers much of our Earth's land surface and can be used for construction, heat energy, tools, etc. Wood is also renewable, but only to a certain extent. Rainforests alone are getting chopped down at an average of 78 million acres a year. Unless we take care of our forests, we will not be able to use them as resources in a few years.
Natural Gas is another abundant resource. It is extracted from deep pits under the earth's crust and can be converted into many different fuels for different things. It is also rather clean to burn, at least cleaner to burn than Coal. However, our reserves for natural gas are running low quickly. In ten years, we won't have any more natural gas to burn, which is why we need to begin looking for new sources of energy.
Aluminum used to be a precious metal, more precious than gold, in fact. But, as you know today, Aluminum is cheap metal that can be extracted rather easily. It has a variety of uses, is rather pliable and cheap to produce. However, Aluminum can only be extracted in very small amounts at a time, which makes it somewhat impractical.
Rocks and Minerals are a nearly limitless source of raw building materials and decorations. They can also be used in things like cement, artificial sand for sandboxes, and sculpting. However, rock currently serves little use as a fuel, which will be a major crisis in a few years.
Uranium is a dangerous, unstable compound that is used for several purposes. One of the most common, is to make clean renewable Nuclear energy, that is cheaply sold and very useful. However, because of it's natural instability, it is also used in the creation of atomic weapons. Uranium is a very radioactive substance which contaminates everything it touches, which is why Nuclear energy isn't the wisest option.