Transcription: The existence of the Earth is indispensable to the life of the world. But the Earth, in the most important form of the composition of all the Earth's lives, is also accumulated in rivers and lakes, and it is the base of complex ecosystems that depend directly from the liquid element. The fauna and flora that live in the roots of the rivers vary in the function of the physical and chemical factors, nature over the level of the sea and the velocity of the sea. The sea subsides from the roots of the sea, avoiding pests and amphibians, especially adapted to these conditions, like the spironid spir ...
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