I'm a robot, although i don't exist in a physical form. Lots of people use me, including you. You see me when you refresh. I'm in the gang with a face on a book and a instant gram. Who am I?

I can be water, I can be wood, I'm used in mathematics and with dinner I'm good.

I’m a tiny cut, a little groove, On belts, trees, or maybe your shoe. I help things fit or show your score What am I that’s never a bore?

One of me is so very tiny, but together we form a vst tapestry. If you let us reign free, we cover entire cities, not just a tree. Most of the time, the sun is our strife, On shade and morning dew we thrive.

Although I’m not royalty I am often a queen or king When it gets dark every night It’s on me people are sleeping