What fact supports the opinion that paper bags are less harmful than plastic bags

Paper bags can decompose in the environment in about a month meanwhile plastic can take hundreds of years. Plastic is harmful in many other ways too, for instance they release toxic chemicals into the earths soil and land and sea creatures can get caught in plastic or eat it and later die.

When we are able to repeat a process indefinitely without using up or contaminating the resources, it is known as Renewable Resources .
Explanation:
Renewable resources are the naturally available resources which will replenish to replace the portion of depleted usage and consumption by natural reproduction.One of type of renewable resource is renewable energy including solar, geothermal and wind energy.
These renewable resources are very important part of Earth's natural environment. Water also form a part of renewable source. Water, if carefully used and controlled it's usage in daily life and also given proper treatment then the water is considered as renewable resource