Tag: evs - i

Mulch is a protective layer of a material, that is spread on top of the soil. Mulches can either be organic - such as grass clippings, straw, bark chips, or inorganic - such as stones, brick chips, and plastic. Materials used as mulches are used to retain soil moisture, regulate soil temperature, suppress weed growth, and for aesthetics. They are applied to the soil surface, around trees, paths, flower beds, to prevent soil erosion on slopes, and in production areas for flower and vegetable crops. Mulch layers are normally two inches or more deep when applied.

Biogas typically refers to a mixture of different gases produced by the breakdown of organic matter in the absence of oxygen. Biogas can be produced from raw materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste or food waste. It is a renewable energy source.
Biogas can be produced by anaerobic digestion with anaerobic bacteria, which digest material inside a closed system, or fermentation of biodegradable materials.

Anaerobic digestion is a natural process in which bacteria convert organic materials into biogas. It occurs in marshes and wetlands and in the digestive tract of ruminants. The bacteria are also active in landfills, where they are the principal process degrading landfilled food wastes and other 
biomass. Biogas can be collected and used as a potential energy resource. The process occurs in an anaerobic (oxygen-free) environment through the activities of acid- and methane-forming (methanogenic) bacteria that break down the organic material and produce methane and carbon dioxide in a gaseous form, known as biogas. 

• Addiction is a psychological and physical inability to stop consuming a chemical, drug, activity, or substance.
• When a person has an addiction, and they stop taking the substance or engaging in the behaviour, they may experience symptoms. These symptoms include anxiety, irritability, tremors and shaking, nausea and vomiting, fatigue and a loss of appetite. 
• Hence, Withdrawal symptoms of drug addiction are Unpleasant symptoms shown due to non-availability of addicted drugs. 
• So, the correct answer is 'Unpleasant symptoms shown due to non-availability of addicted drugs'.

Sometimes, an addict can get a sample of heroin, which is adulterated with a dangerous poison, strychnine. Its injection is known as 'hot shot', which can cause quick death. 'hot shot' can also occur, when an addict, used to injecting heroin 3-5% purity, gets a purer blend of the  drug.
Thus, the correct answer is option (A), 'Injection'.

An average cup of tea contains approximately 20 - 30 mg of caffeine.

Habituation is becoming accustomed to any behaviors or condition, including psychoactive substance use. It is a desire but not a compulsion to continue taking the drug for the sense of improved well-being it engenders. This habituation is the initial stage of drug addiction,
Thus, the correct answer is option (B), 'Habituation'.

Nicotine is the primary addictive agent in cigarettes, chewing tobacco, cigars. Tobacco leads to nicotine dependence.
Thus, the correct answer is option (B), 'Nicotine.

Drug addiction psychological symptoms include:

• Unexplained change in personality or attitude
• Sudden mood swings, irritability, or angry outbursts
• Periods of hyperactivity, agitation or giddiness
• Lack of motivation, appears lethargic
• Appears fearful, anxious, or paranoid with no reason.