Only 3 per cent of earth’s water is fresh, the rest 97 per cent is salt water. Of that 3 per cent, over 2 per cent is frozen in ice sheets and glaciers. It means less than 1 per cent fresh water is found in lakes, rivers and underground. Water, indeed is a scarce resource.
The earth is divided into three layers: the upper crust, the middle mantle and the innermost core. The upper crust is made of solid plates, called tectonic plates. Some plates are under the ocean too. The mantle is semi solid and the tectonic plates slide over the mantle, causing an earthquake. Every year over one…
The number 17 can be written in Roman as XVII. When these numerals are rearranged, it reads VIXI, which means in Latin ‘I have lived’, meaning ‘my life is over’. The number 17 is therefore considered unlucky in Italy.
Butterflies range in size from just over half an inch up to almost 12 inches. The size of the butterfly depends on the wingspan and the body. The butterfly with the biggest wingspan is the Queen Alexandra’s birdwing, which has a wingspan up to 1 foot (30 cm) wide.
During fertilization of the egg by the sperm, the DNA of the sperm is injected into the egg. Both the sperm and the egg have a single set of chromosomes each, but the fertilized egg receives the DNA from the sperm and comes to possess both the sets of chromosomes. This fertilized egg cell stays…
The practice of people eating insects is called entomophagy. It has been practised for centuries throughout Africa, Australia, Asia, the Middle East, and North, Central and South America. This is because many bugs are both protein-rich and good sources of vitamins, minerals and fats.
