Twins are monozygotic dizygotic. Monozygotic twins are externally identical while dizygotic twins may or may not be identical. Every human has two things which are unique to him-finger prints and DNA. In any case twins cannot have identical DNA or finger prints because they are genetically different. But clones are genetically identical and hence finger prints of clones are supposed …
Read More »Why does one need to boil milk repeatedly to preserve it without refrigeration?
If it is not refregerated, milk gets infected with pathogens (Becteria, Viruses), so it is boiled at regular intervals. When milk is boiled at 100 degree Celsius, nearly all pathogens get killed. And boiling retains the enzymes, taste, flavour and nutrients that are present in milk. In the refrigerator, the bacteria get inactivated, but they don’t die. Hence, boiling is …
Read More »Why do bride sit to the left of their grooms?
Brides sit to the left of their grooms following religious scriptures. In the scriptures, it says the left side of a male represents his wife, and the right side of a female represents her husband. Funny Logics So that the bride is closer to the groom’s heart. To set their husband right. Because the groom is Mr Right for the …
Read More »What’s the difference between a folk tale and a fairy tale?
A folk tale is a narrative in prose, usually woven together by an unknown author. It travels orally through generations by way of story telling. The term is also extended to include stories by known authors, when printed stories are adapted to suit a certain time at culture-specific story telling sessions. They also include myths, fables and tales of heroes. …
Read More »Why does water not soak into our skin?
Our skin is a true waterproof, for nothing can enter it from the out side. Of course, it will allow water to come out in the form of sweat. Our skin contains millions of tiny tubes which carry sweat from the inner(true) skin to the finer skin on the surface of the body. With the sweat glands exerting pressure upwards, …
Read More »Why does the WWF logo feature a panda?
The World Wildlife Fund was founded in UK by Sir Peter Scott, a British naturalist and painter, in 1961. The WWF got the idea of using Chi-Chi, a female giant panda at London Zoo. The team felt “the big, furry animal with her appealing, black-patched eyes” would make an excellent logo. Another reason was to minimize printing costs (it needed …
Read More »Why does the touch-me-not shrink when touched?
The touch-me-not shrinks due to loss of turgidity (the pressure of content against the cell wall) by cells within the pulvini-specialised motor organs at leaf joints. Upon stimulation, like touching, the leaf cells lose potassium ions, triggering water to leave the cells through osmosis. It takes about 10 minutes for the cells to regain turgidity and the leaves to open …
Read More »Why does the sun sometimes burn our skin?
Some sunlight is essential for the formation of our bones as children, and to help us stay healthy and resist infection. However, if we stay in the Sun too long, some of its rays can cause the skin to go red and burn. It is better to avoid being in the Sun at mid-day, which is when the Sun’s rays …
Read More »Why does the Sun follow You?
Have you ever noticed that when you are in a car, or a bus, travelling on a straight road, the Sun appears to move right along with you? While telephone poles and trees close to the road, whiz past in the blink of an eye, the Sun is always visible throughout the journey. No matter how fast Daddy drives, you …
Read More »Why does the sky look blue from the earth and black from the moon?
A phenomenon called Rayleigh’s Scattering causes light to scatter when it passes through particles that have a diameter one-tenth that of the wavelength (colour) of light. Sunlight is made up of different colours, but because of the elements in the atmosphere, the colour blue is scattered more efficiently than other colours making the sky appear blue. However, the moon does …
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