Trash bags can help the world in a few different ways:

1. Waste management: Trash bags help to contain and manage household and commercial waste, making it easier to dispose of and prevent litter. This helps to keep communities clean and healthy, and reduces the risk of disease transmission.

2. Reducing plastic waste: Using trash bags made from recycled plastic or biodegradable materials can help to reduce the amount of plastic waste in landfills and the environment. This is important because plastic can take hundreds of years to decompose, and it often ends up in the oceans where it can harm marine life.

3. Protecting natural resources: Trash bags made from recycled plastic or biodegradable materials can help to reduce the demand for new plastic, which is made from non-renewable resources like oil. This can help to conserve these resources and reduce greenhouse gas emissions.

Overall, trash bags play a vital role in waste management and can help to protect the environment by reducing plastic waste and conserving natural resources.