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Seen from the sky, the landfill is masked under a quilt of black plastic, sealing away our refuse from the world below. Landfill background. Aerial view.
Environmental researchers investigate the condition of canal water for toxic spills, river waste water sampling, Asian researchers collect water samples in farmland for research and development.
Bacterial Cultures in Petri Dishes in microbiology laboratory. Test various germs, virus, Coronavirus, Corona, COVID-19, Food science.
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
closeup of hand holding white rice damaged by rice weevil pests. bad rice that can not be consumed.

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