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annual decrease in CO 2 emission would be only between 4.2 and 7.5% as estimated
by previous researchers.
Keywords COVID-19 · Pandemic · Carbon emission · Air pollution · Toxicity
8.1 Introduction
Since its inception in December 2019; 16,932,986 people have been infected with
COVID-19 world wide and 664,333 deaths have been registered by July 29, 2020. The
infection spread rapidly all over the world and the WHO declared it as pandemic
in March 2020. Followed by WHO announcement most of the countries declared
complete lockdown that stops all types of anthropogenic activities including shutdown of industries (except the essential services) to minimize the loss of human lives
(Fig. 8.1).
Although, lockdown minimizes the mass level infection and death, it creates
an incredible downward economic growth for most of the countries especially for
developing countries. Due to strict restriction of human activities and shutdown of
industrial production different countries are facing economic slowdown. Reports
indicated that due to lesser energy consumption and industrial production world
GDP reduced by up to 30% [16]. Though, the COVID-19 based crisis reduced the
global GDP, it has a positive impact on our environment. As human activities are
restricted, fossil CO 2 emission also decreased significantly.
Fig. 8.1 COVID-19 infection with time
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