system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do people plant trees in the millions on such short notice e.g. like on environmental events?

Surely they don't manually plant each seed one by one?
gpt
In the forestry industry an experienced planter on fast ground (i.e. flat, soft soil, no logs/branches/brush in the way) can plant 3000+ trees per day. They nearly always get paid piece rate, hence they’re motivated to go quickly. 

It’s hard work. 

I would think that for those enviro events they get huge numbers of people to plant a couple of hundred each.