1. (a) What is ‘environmental pollution’?
(b) Distinguish between biodegradable and non-biodegradable pollutants.
(c) Choose the biodegradable pollutants from the list given below:
Sewage, DDT, radioactive waste, agricultural waste. [Delhi]
Answers
Answer:
Explanation: {a} Environmental pollution is one of the most serious global challenges. Wild-type organisms have a slower degradation rate of hazardous materials. Currently, advanced molecular biology tools along with conventional approaches allow us to rapidly degrade or accumulate hazardous materials from environments. This can help modify microorganisms to gain the ability to sense and degrade hazardous chemicals from contaminated sites, in turn, allowing us to grow vegetation and improve crop productivityEnvironmental pollution is not a new phenomenon, yet it remains the world’s greatest problem facing humanity, and the leading environmental causes of morbidity and mortality. Man’s activities through urbanization, industrialization, mining, and exploration are at the forefront of global environmental pollution. Both developed and developing nations share this burden together, though awareness and stricter laws in developed countries have contributed to a larger extent in protecting their environment.
{b} 1Biodegradable pollution is those which are decomposed by natural biological agents. Biodegradable means that it can be broken down by living things like bacteria and fungi (these are microorganisms). 2 non bioDegradable means they do not require living organisms to break down. Instead, chemical additives are used in the plastic to make it crumble more quickly than it would otherwise.Non- biodegradable pollutants that do not decompose. They are decomposed and degraded by microbes. ... Non- biodegradable pollutants cannot be disposed of easily.
{c} A)The environment pollution is a harmful factor which can be physical, chemical or biological.And this factor affect the natural health and hygiene of our environment.
B) Biodegradable pollutants easily decompose in the nature but the Non Biodegradable pollutants are non decomposable in the nature.
C)Sewage and agricultural waste are biodegradable waste.