How do you know which type of biodegradable items contain nitrogen vs. carbon? So, we have a mulch pile at the local garden, which...

So, we have a mulch pile at the local garden, which is a combination of greens and browns. This necessarily means the greens are drizzling material (i.e. ginger peel, egg shells, etc.) and the browns are dry substance (i.e. leaves off a tree).

My grill is how can I learn to differentiate between the two? I own biodegradable tea bags at home, but don't know if those are greens or browns. Thanks.
Has anyone see a spider-like ant beside a...
Answers:    Green - nitrogen containing stuff specifically "fresh"
Brown - carbon containing stuff that is "dead".
So tea is made from dried (dead) leaves and is that`s why considered "brown" or carbon-contributing. Orange peels and other stuff only cut from veggies or plants is "green" or nitrogen-rich, things that have dried out completely or browned and dropped are carbon-rich (comparatively).
Nitrogen harsh environment tend to rot,stink, and break down rapidly.
Carbon inhospitable surroundings tend to hang around and break down slowly - together, they will break down okay without smells.