It and there

I've been noticing a few problems with it and it's; when one or the other should be used."It's" is "it is" or "it has" It's a lovely day, isn't it?" or "It's been a long time since I went to the dentist"

There is a good blog called Perfect English Grammar you can go to and practise these key elements and more
https://www.perfect-english-grammar.com/it-and-there.html