Question

heya mate answer it
1st one
​

Answer 1

Answer:

hey mate

Explanation:

$<font color="yellow">condition after the covid 19</font>$

The nationwide lockdown due to the pandemic has led to a drastic decline of NO2 emissions and reduced air pollution levels.

Amidst the devastating Covid-19 pandemic, a rare positive has been the significant global decrease in air pollution levels. Primarily, experts have measured nitrogen dioxide (NO2), one of the six major air pollutants (in addition to particulate matter, carbon monoxide, sulfur dioxide, ground-level ozone, and lead). NO2 has, like most other gases, natural and human sources.

Natural sources include lightning, oceans, and volcanoes. However, in urban regions, natural sources of NO2 account for a small fraction of the total NO2 levels; according to a 2005 report by Australia’s Department of the Environment and Heritage, natural sources of NO2 only account for 1 per cent of overall NO2 levels in cities

hope its help;)

Answer 2

Can u pls give clear picture