Trench warfare is a type of land warfare using occupied fighting lines consisting largely of trenches, in which troops are significantly protected from the enemy's small arms fire and are substantially sheltered from artillery. The most famous use of trench warfare is the Western Front in World War I. It has become a byword for stalemate, attrition, sieges and futility in conflict.
Trench warfare occurred when a revolution in firepower was not matched by similar advances in mobility, resulting in a grueling form of warfare in which the defender held the advantage.[2] On the Western Front in 1914–18, both sides constructed elaborate trench and dugout systems opposing each other along a front, protected from assault by barbed wire, mines, and other obstacles. The area between opposing trench lines (known as "no man's land") was fully exposed to artillery fire from both sides. Attacks, even if successful, often sustained severe casualties
Explanation:
The peptidoglycan layers which are present in the gram-positive bacteria are interspersed densely with the anionic glycopolymers that are known as wall teichoic acids or simply, threads of teichoic acid.
These glycopolymers play a very crucial role in the determination of the cell shape, regulation of the cell division, and also other fundamental aspects of the physiology of gram-positive bacteria.
Wall teichoic acids are also important in the process of pathogenesis and play important roles in the antibiotic resistance.
The identity of the smoke released when a candle is extinguished is smoke is unburned particles of carbon released when the hydrocarbons break down(paraffin gas).
