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Traces of flying planes spreading across sky horizon. Strong winds carry fine particles over long distances. Example of possible use of chemical weapons by airborne droplets over territory of enemy.
closeup of hand holding white rice damaged by rice weevil pests. bad rice that can not be consumed.
blood stains on a white shirt.
algae pond, Harmful algal bloom (NAV) is water bloom, which causes negative effects on other organisms through the production of natural toxins, HAV are often associated with large-scale deaths
Bacterial Cultures in Petri Dishes in microbiology laboratory. Test various germs, virus, Coronavirus, Corona, COVID-19, Food science.

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