Science & Mathematics Questions & Answers

The Greek root nephos means cloud, and is found in a variety of meteorological terms such as nephology, the study of clouds; and the nephoscope, an instrument used to detect cloud motions. Nephology is a specialised and complex branch of science. Nephologists study clouds to help people understand weather patterns.

Munchausen Syndrome, also known as hospital addiction, factitious illness, afflicting those referred to as professional patients, is a repeated fabrication of clinically convincing simulations of disease for the purpose of gaining medical attention. It refers to patients who wander from hospital to hospital feigning acute medical or surgical illness and giving false and fanciful information about their medical and social …

Water We can live for some weeks without food but only a few days without water.

In Greek, phyle means tribe, and genesis means birth. Molecular phylogeny tries to reconstruct the lineage of species through study of amino acid sequences in fossils. The result of this analysis is expressed in a phylogenetic tree.

The mobile elbow results from using the mobile for long hours. Called the ‘cubital tunnel syndrome’, it is also called ‘cell phone elbow’. The problem occurs when the ulnar nerve, which runs across the elbow, down to the ring and little fingers, gets over-stretched and blood supply is restricted, sparked by holding a phone to the ear for long periods.

Microtomy is the technique of cutting tissues in very small sections. This technique is used for histological and pathological studies. A tissue (or small part of it) is embedded in paraffin wax and then cut using a microtome (a machine) to get thin sections. These sections are stained with appropriate dyes and observed under the microscope.

Micro-propagation is the technique of multiple production of plants in-vitro. It is used for plants that do not produce seeds or respond to normal vegetable reproduction.The process includes many steps — stock plant care, explants selection and sterilization, media manipulation to obtain proliferation, rooting, acclimatization and growing of liners. Micro-propagation’s main advantage is to produce disease-free plants in multiple numbers …

In this technique, the compound under investigation is bombarded with a beam of electrons which produces an ionic molecule or ionic fragments of original species. The resulting assortment of charged particles is then separated according to their masses. The spectrum produced is known as mass spectrum, which is a record of information regarding various masses produced and their relative abundance. …

In World War II, French underground fighters called their secret army the Maquis. This is the name of healthland vegetation is called chaparral in California, fynbos in South Africa, and macchia in Italy.

Many people throughout the world suffer from malnutrition-that is, they are undernourished. Undernourishment causes ill-health, starvation and death. The FAO (Food and Agricultural Organization) has worked out how the calorie intake of people compares with what they need for good health. The worst malnutrition occurs in developing countries. For example, the average calorie intake per person in Ghana in 1983 …