posted by Jenny .
Waste created by man can be classified under Heading X (eg torn book, mouldy bread, rotten apple) and Heading Y (plastic bag, biscuit tin, broken bulb). What is Heading X and Heading Y?
Non-compostable materials ?
Here, where I live X would go in the Garbage bin while Y would go in the Recycle bin. Perhaps that will give you a clue, about biodegradable, etc.?
a ship sails at an average speed 30km/h for 2 days. How far has the sip traveled