Seriously ?? At first I thought this was for a special day or some celebration like an event that will pass after a couple of days. But it’s NOT?!! with all due respect but WTF?
Studio Bones never including this scene in the show is a crime against humanity. Like??? It’s literally one of the most important interactions that either of these characters have????
It shows how perceptive she is, it shows how scared he is, and it gets rid of the myth that Bakugo has been bullying Deku their whole lives - he bullied him when they were kids and then when he showed interest in being a hero right before UA. Before that he just ignored him.  Plus it parallels Uraraka encouraging Deku by having her encourage Bakugo too. 
I...tried to make a meme and got carried away and made A Thing that is like partially unfinished because i spent like 3 hours on it and then got tired.
I think this is mostly scientifically accurate but truth be told, there seems to be relatively little research on succession in regards to lawns specifically (as opposed to like, pastures). I am not exaggerating how bad they are for biodiversity though—recent research has referred to them as "ecological deserts."