air pollution cartoon . atmospheric aerosol particles or particulate matter

vector text symmetry sketch size pollution pm25 pm10 plant pattern particulate particles monochrome matter line leaf font flower drawing design comparison circle cartoon brand branch atmospheric art air aerosol pm cancer 2019-ncov 2 5 polluted streptococcus environment diagram contamination clean smoke dirty emissions flat ecology pollute mist fine particles dioxide air respirable industry isolated bacteria biohazard biology dangerous virus flu health infection medical medicine micro microbe microbiology microscopic protect risk science symbol vector abstract bacillus background bacterium cartoon cell