the surface of the river is covered in a thick layer of foam and bubbles a result of the excessive pollutants and

surface river thick layer foam bubbles result excessive pollutants chemicals dumped clean waters plentiful fish population dwindled hunger starvation poverty food undernourishment water pollution environmental damage toxic environment global crop embargo sanctions war agriculture shortage supply insecurity malnutrition impact threaten danger risks famine severe strict serious catastrophe harvest heatwaves ai generated