The aerodynamic shape of the blue sharks allows it to move elegantly through the ocean.
There are many ways humans can reduce the amount of endangered and extinct species. However, I would say by reducing pollution and logging/mining. Nearly 318 species have become extinct due to pollution. The reduction of carbon emissions would be a good way to curb the amount of pollution produced by humans.
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More-resistant endospores of themophilic bacteria may survive, but wont germinate and grow under normal storage.