Our current society struggles from fossil fuel shortage and pollution, which call for explorations of different types of energy and multiple ways to produce clean energy for daily and industrial uses. ... They essentially use sun light, water and carbon dioxide from the air to make sugar and oxygen through photosynthesis for growth (Wen 2009). ... Carbon dioxide is usually satisfied by the natural air, but aerators can be used to increase CO2 absorption. ... The open-air design is more susceptible to contamination with animals that feed on algae. ...

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• Approx Pages: 13
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• Grade Level: Graduate