Read variety of articles written for students keeping in mind their issues and problems which they face in their studies
Insects include beetles, flies, butterflies, grasshoppers and many others. There may be as many as 30 million different kinds of insects – more insects then all other kinds of animals put together. Butterfly wings have beautiful coloured patterns. They are made of tiny scales which overlap like the tiles on a roof. The biggest and heaviest insects are beetles. The male Goliath beetle can be as long as 15 centimetres. The longest insect is a kind of African stick insect. It can grow up to 40 centimetres long. Millipede means ‘a thousand feet’, but so far no millipede has been found to have more than 710 legs. It is very difficult to swat a fly. One reason is that flies can see in 4,000 directions at once! Their eyes are made up of that number of different facets (or lenses). Insects have no voice. The sounds they make are all produced by their wings or legs. A snail can sleep up to three years without waking up. Ants are very strong. They can pull things 300 times heavier than themselves and lift things 50 times their own weight. Termites build their nests in huge mounds many times taller than themselves. The most toxic spider is probably a Brazilian wandering spider that likes to hide inside houses, in shoes and other dark corners. Luckily, the Brazilians have a very good antidote to its bite. Most spiders are our friends as they catch flies and other insects. Silk from a spider’s web is stronger than steel thread of the same thickness.