Why can fish breathe underwater, but we can’t?
Quentin
Humans have lungs to breathe, but fish breathe with special organs called gills. People and fish both need oxygen to live, but fish get it from water instead of air. As a fish swims along, its gills remove oxygen from the water. The oxygen then moves through its body so the fish can breathe. Human lungs can’t process oxygen from water, so we get oxygen from air instead.
Why do we cry when we cut onions?
Luke
Onions are spicy root vegetables. Not only do they add flavour to food, but they are chock-full of nutrients and vitamins, too. But when you chop an onion, tiny droplets of a tear-jerking gas are released into the air and can get into your…
