interesting questions

According to scientists, when we sleep our brain creates a subconscious mix of things from its stored memories, emotions or moods. This weaves a dream of things or information which we hardly even recall or remember in our day to day life. Though dreams tend to be very fuzzy, and appear to have no ending or beginning, it is believed that they do hold some hidden meaning.

The kidneys in our body cleanse the bloodstream and maintain the chemical balance in the body. After the process of digestion is completed, the waste mixes in the bloodstream. Kidneys filter this blood and the waste and excess water is thrown in bladder. The waste is removed through human body in the form of urine.

During fertilization, the deposited pollen on the female flower moves below the flower and into the top most part of stem. Here after successful mixing of male and female DNA, the pollen ripens and develops into a fruit which contain seeds. Thus a seed is developed which inturn has an embryo and an outer covering.

The air we breathe is usually a mixture of many substances which need to be avoided by our nose. Our nose senses this and expels unwanted particles through the nostrils be it dust or pungent smell. Many people are very sensitive and react strongly when they smell substances like paints or perfumes. This makes them sneeze.

Our eyes have tear or lacrimal glands located at the outer corner of our eye behind the upper eyelid. When we blink, a salty solution is released that washes the eyes and is drained into the tear duct in the corner of the eye. It has been observed that during happiness or sadness, there is excess blood flows to the face or increased pressure and the upper eyelid squeezes the lacrimal gland. When these causes excessive build up, it comes out in the form of tears in our eyes.

According to Archaeologists, farming was not a mainstream activity till 13,000 years ago. Farming soon emerged as a livelihood later in different parts of the world, starting in Asia then in some parts of Africa, Mexico and America.

In prehistoric times, our ancestors used to make tools from stone. Gradually man started to make stone tools by removing flakes and blades from a stone. Bones and horns became a common tool later, along with other weapons such as the bow and arrow or spear. Man later evolved and started using metals such as bronze and iron.

Researchers and scientists gather information about pre-historic life by studying remains of plants, animals and other objects, their fossil imprints and human bones. According to scientists, the study of human evolution consisted of apes which evolved into three distinct categories. One of the species was of humans, whle other two were of gorillas and chimpanzees. Much information is derived from the drawings and inscriptions on the wall.

Among many famous scholars, mathematicians, rulers, poets, Alexander the Great is considered to be one of the most greatest military rulers. Aristotle and Plato contributed hugely in life and ethics. Meanwhile Archimedes, the astrologer became a pioneer in the field of science and mathematics. Thus Greece has been a homeland to some of the most brilliant people in the history of time.

Pharaohs were Egyptian kings who wanted the construction of pyramids as places of burial. In fear that their dead remains would be robbed, thus enclosed structures known as pyramids came into existence.