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Algae certainly are a broad group of simple plants starting from single-celled diatoms to fifty meter long giant kelp. There are over 100,000 species. Some algae form symbiotic relationships with other organisms to build lichens and coral reefs. Among the oldest organisms on Earth, algae based in the Vindhya Basin of India go as far back over 1.5 billion years.
The Volkswagen Beetle is strong competitor of Mercedes Smart. It has a cute exterior design, with nice, curved lines, even though the interior incorporates a multi-functional sport steering wheel, making the vehicle simple to control, as well as a comfortable back-seat with plenty of legroom, uncharacteristic for such vehicles. Its fuel economy is a bit worse when compared to Smart, with 22 mpg/city and 31 mpg/highway, though the great safety measures and excellent design needs to be sufficient cause to draw young drivers.
Rail transit has long been used as public transport in cities. It plays an increasingly important role. Economic developed countries urban traffic development history tells us that only by large passenger traffic system of urban rail transit (metro and light rail), is an effective way to fundamentally improve the urban public traffic
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