Antibiotics are powerful medicines that fight bacterial infections. Used properly, antibiotics can save lives. They either kill bacteria or keep them from reproducing. Your body's natural defenses can usually take it from there. Antibiotics do not fight infections caused by viruses, such as.
Whale Shark. The Whale Shark is the largest and the heaviest living shark because its weight is more than 21 tons and its length is more than 12 meter. It is found in open oceans and warm waters. It feeds on plankton but some times it also uses other small fishes as food.
The Megalodon is an extinct species of shark. The largest species of shark to have ever lived is thought to be the Megalodon. This species is now extinct. It is believed to ha â¦ ve existed during the prehistoric era, and has not lived for millions of years. It is thought that this giant shark could measure up to 59 feet long (18 metres).