Science & Mathematics Questions & Answers

Science & Mathematics Questions & Answers

How did the abbreviation Dr for doctors originate, and why do engineers not use Er?

Doctors Day Quotes For Students And Children

The abbreviation originated in an effort to separate people qualified to practice medicine from those holding the highest academic degree i.e. doctorate in non-medical subjects. Hence, a physician or surgeon is denoted by Dr, while the holders of academic degrees are known by the initial ‘D’ e.g. DPhil (Philosophy) or DLitt (Literature). In USA, only dentists and veterinary surgeons are …

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What does cold blooded mean?

What does cold blooded mean?

What does cold blooded mean? Creatures such as mammals have a body temperature which stays roughly the same whatever surroundings they are in. This temperature varies from creature to creature, for example the body temperature of any healthy human is 98.4 degrees Fahrenheit. Some creatures are cold blooded, which means that the body temperature varies according to the animals surrounding. …

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When will the Oceans of the Earth Overflow?

When will the Oceans of the Earth Overflow?

When will the Oceans of the Earth Overflow? Try this out. Plug the sink and leave the water running. It will lead to a flood in the bathroom and a scolding for letting the water overflow. Since the sink could not hold an unlimited amount of water, it let the water spill out. But even the oceans are enormous bodies …

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Why are Cancer and AIDS so feared?

Why are cancer and AIDS so feared?

Cancer and AIDS are two of the most dreaded diseases. They are not highly infectious diseases like the plagues of centuries past, so that people who are with sufferers are not necessarily at risk. But they can be difficult to treat, and there is little hope for patients who have either disease in its advanced stages. The two diseases may …

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What is blood group? Types, Blood Transfusion

What is blood group?

Perhaps you already know, which blood group you belong to: A, B, AB, O, Rhesus + Rhesus + (Rhesus Positive), or Rhesus – (Rhesus Negative). But do you know what these letters and signs mean? Although all human blood looks the same when see under a microscope, we do not all have the same type of blood. Some substances, found …

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What is the purpose of blood? Function, Structure

What is the purpose of blood?

Blood plays vital role in the life of our body. It is a fluid that circulates through the heart and blood vessels, supplying nutritive materials to every part of the body and carrying off waste products. It is colorless fluid, plasma, in which float myriads of corpuscles. There are of three kinds: red, white and platelets. Learn More: Blood is …

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Who invented the Cigarette?

Cigarette smoking is injurious to health

The cigarette was the last method of taking tobacco to be developed. Previously it had been smoked in pipes and cigars, inhaled as snuff (in powder form) and chewed. Tobacco itself was brought to Europe and the rest of the world when Columbus discovered America, and it was thought to have marvelous medicinal properties. No one could be said to …

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What is terminated seed technology-based bollygard seeds?

What is terminated seed technology-based bollygard seeds?

The bollygard cotton seed is suspected to have the ‘terminator seed’ technology which involves introduction of a gene that terminates the germination of the seeds after onetime usage. ‘Terminator’ is actually a name coined by the Canadian non-governmental organisation Rural Advancement Foundation International (RAFI) for a technology that essentially controls the expression of certain genes, causing the plant to turn …

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What is Mission Shakti? Name the Missile & satellite used in it?

Mission Shakti

What was the test? On March 27, 2019 India conducted Mission Shakti, an anti-satellite missile test, from the Dr. A P J Abdul Kalam Island launch complex. This was a technological mission carried out by DRDO. The satellite used in the mission was one of India’s existing satellites operating in lower orbit. The test was fully successful and achieved all …

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