Yes, oceans did not exist 4 billion years ago because Earth's atmosphere was too hot and it composed of gases that are toxic. It is only later when the Earth started to cool down that water began to surface on Earth and enabled the existence of many life forms that have evolved and became extinct through time.
Arsenic pollution of groundwater is a form of groundwater contamination, which naturally occurs in high concentrations of arsenic in deep groundwater.
Nuclear power plants provide 17% of the world’s electricity. There are over 400 nuclear power plants worldwide
And the production of solar elements and cumulative use gallium, arsenic, selenium and other elements, which become heavy pollutants as they disposal in ground.
