There is no waste within the natural world unless we consider what humans have wasted. Nature recycles everything – even water - so that everything contributes to the overall benefit and survival of eath's natural system.
By comparison, many of us discard potential resources carelessly because we no longer value them for ourselves. These potential resources often end up in the waste stream. In the recent past we may have been very keen to buy the products which having served their original purpose are thrown away.
No other species creates such waste as humans do .
Unfortunately in our haste for a fast convenient lifestye some products that we produce - mostly from by products of the fossil fuel industry - may survive for a very long time in the environment and take up space on land or water which could be better used. Within the natural world a clever closed loop system has many organisms benefiting as items are returned to the soil or earth. Waste is a major global problem as we try to cope with items tossed away. Even some food which we need to sustain us is considered as waste instead of a beneficial resource. No food needs to be regarded as a disposable commodity to end up in landfill. Spoiled food is valuable to return nutrients to the earth and there are many ways to achieve this such as worm farming and composting. Food waste is a complex challenge at all levels in all countries. This Guardian article raises some issues