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A fish is a water-dwelling vertebrate with gills that does not alter form, as amphibians do, throughout its life. Most are cold-blooded, although some (like some species of tuna and shark) are warm-blooded. You will find more than 29,000 species … Read More

Due to the global warming with increased effects for this year, the developed states will change their national strategies by taking into account these aspects, and we will see important geopolitical changes. United States will try to overcome the economical … Read More