How is natural waste different than toxic man made waste

Natural waste is something that occurs in nature, typically as a part of the ecosystem or something essential to the earth's function. For example, bug shells and dead leaves. When they were alive, they were a key component to nature and played an essential role. Therefore, not posing any threat.

However, man made waste is toxic and different for many of the components are chemically processed. Bug shells and dead leaves were a natrually made product, that does not contain any toxic, radioactive, or even deadly element added to it that was NOT added, it was born/made that way. However man made waste, such as litter, are things made in factories, such as cups and fast food containers. Those are made in factories, and are made from things that did not natrually come to earth, posing a threat to the natrual things essential for the earth's processes.

We may need dead leaves as a role in the ecosystem, however we could do without the littered McDonald's cups.