Lakes, rivers, streams, and pools used to irrigate crops, provide drinking water, and used for a sanitation system are polluted by sewage, industrial waste and toxins, heavy metals, fertilizers, chemicals, radioactive substances, land sediment, and oil. Polluted water is responsible for at least 25 million de

Many companies, much of it coming from Britain, dump toxic waste into the ocean. Toxic waste causes toxic algae blooms, which develop underwater and kill anything that comes into contact with it. In 1988, a toxic algae bloom developed off the coasts of Denmark and Sweden, and it was 10 meters deep and 10 kilometers wide. It killed millions of ocean organisms and caused all the beaches in the area to close.

There are many types of toxins that exist that are very harmful. One example is mercury which comes from air pollution, natural sources, and manufacturing. Seafood contaminated with mercury causes birth defects and nervous system damage. Another example of harmful toxins are PCB’s which come from pre-1970’s electrical equipment and hydraulic fluids. They cause developmental problems in children and reproduction problems in some animals. Another major toxin is radioactivity, which comes from nuclear waste, reactor leaks, fallout, and natural radioactivity. The damages done by radioactivity

Some topics in this essay:
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