The bottle - nosed dolphin normally dives to depths of 150 feet [45 m], but the deepest recorded dive for a dolphin is 1,795 feet [547 m]! How does this mammal survive such a dive?
जगभरात २०० कोटी लोक चुलीकरता व इतर उद्देशांकरता इंधन म्हणून लाकूडच वापरतात. ”