OK! so some things you can do when you feel that way is to talk to someone about what or why you feel that way. Or you can get yourself in a good mood again by doing something you love or talking to someone you love. or if like you can stress-eat (it helps 50% of the time guaranteed!) or you can do something to get your mind off of your bad mood and play a game/videogame or watch tv and stuff like that. And what i got for you, this is what i did when i felt depressed! hope this helps!
the exact definition of natural vegetation is a cover of plants that can grow alone with little to no human interference, so i believe this fits your description best!
