air
15 Oct 2014
Fish: Role of swim bladder
A swim bladder is for a fish as lungs are for human. The fish takes in oxygen from the water using its gills. There are also some species especially those in slow-moving waters gulp air at the surface. An example is lung fish. The lung fish has a swim bladder richly supplied with blood vessels
27 Aug 2014
Travel sickness (motion sickness): Know the reasons
There are sufferers of travel sickness or ‘motion sickness’ in all parts of the world. Travelling by air, sea or road can make them sick. Vomiting, dizziness, nausea, mild headaches are few of the symptoms of motion sickness. They get back all their energy once their journey ends. Our ears, nose and eyes play a