Answer this fast please it's urgent I help u guys also please help...
Answers
Answer:
COVID-19 became the opportunity for the earth to build a clear blue sky and clean the air. During the period of lockdown across the world, the sight of the blue sky created a sense of optimism among the people towards a clean and better environment. Before COVID-19, all over the world are being suffered by a high level of urban air pollution especially in the form of CO2, SO2, NO2 and particulate matter The major sources of pollution such as transport, industries, power stations are responsible for the increased output of all these pollutants. From years back (2001 to 2019) various agencies all over the world announced such as clean air programs to reduce particulate matter pollution levels. These programs also pointed out the air quality standards, these are much weaker than the world health organization (WHO) guidelines, and more evidence of the health impact of air pollution was investigated. A report of WHO indicates that almost 8% of total death in the world is due to air pollution (WHO, 2016). Many respiratory diseases such as hypertension, heart attack, cognitive and mental illness are already triggered by air pollution. The only difference is that those diseases may not be as immediately lethal as COVID-19 and not transmitted by person to person. It has been established that before COVID-19, emission of CO2 was raised by 1% per year over the previous decade (Jackson et al., 2019). The positive effect of lockdown is to decrease the CO2 emission by −17% (−11 to −25%) by 7th April 2020 (Quere et al., 2020) with respect to the mean level of emission in 2019. Air quality index (AQI) is the assessment of air quality. The lower the AQI value, the better is the air. The normal air quality index range is (100−200) and presently it is in the satisfactory range (50–100) category as reported by Gurfam being a scientist at SAFAR. Zambrano-Monserrate et al. (2020) reported that the air quality index (AQI) is decreased by 44%, 33%, 29%, 15% and 32% in north, south, east, central and western India respectively. The same study also shows that from March 16th to April 14th, 2020, 22 cities of India show the reduction of PM10 (Particulate material), PM2.5, CO, NO2, by 43, 31, 10 and 18%. During the quarantine period in COVID-19, the amount of NO2 was decreased by 22.8 μg/m3 and 12.9 μg/m3 in Wuhan and China respectively. In 367 cities, the PM2.5 fell by 18.9 μg/m3. As per the report of CAMS 2020 reduction of 20–30% of PM2.5 is observed in a wide area of China. Mahato et al. (2020) investigated that after three weeks of lockdown period from 24th March 2020, pollution of the Delhi, India, has experienced a noticeable reduction of different air pollution causing materials in the following Table
Answer:
yeah! we can surely say that our mother nature is healing. many people have affected with virus and died. this is due to their inhealth and carelessness and haven't take proper precautions.
but some people following lock down and staying in their homes. As there are no people roaming our nature is so much benefitted. people can't use any vehicles. so, no releasing of CO2 gas and the pollution is decreased some what. ozone layer also healing and the animals can roam without fear. all rivers, soil are very clean. No pollution can see