What is biodegradable and non biodegradable materials?

Non-biodegradable- is a things that don't decomposed.

example:

styro,wheels,plastic bottles, and steel.

Biodegradable - is a things that can be decomposed and it can be fertilizer to your plant.

example:

fruits,spoiled foods,thread, and decomposed plant.

you can place the biodegradable at the compost pit.