polychlorinated biphenyls

The ocean is poisoned, half of the killer whales will die
Polychlorinated biphenyls (PCBs) were previously used to make electrical and plastic components that are one of the most toxic substances polluting the ocean.
The creature in the deepest sea of the planet also began to be affected by humans
Deep ocean locations that are considered to be the most secure and pristine turned out to be relatively influential.
Finding the polar bear's genitals is getting smaller and smaller
Research shows that chemical pollutants have weakened the penis, causing the polar bear to become extinct.