[tempguy9999]

A few mins searching and I've not been able to find any figures that justify that, do you have any to hand? An acre sounds a bit small.

Nearest I've found is <https://greenismything.com/2015/06/23/howmanytrees/> which suggests ~2 acres per head for the US.

[avip]

The Trillion-trees campaign claims it'll offset at least 10 years of anthropogenic emissions.

So to a zero approximation, I need to plant 1000 trees to offset my lifetime's carbon footprint. Without too much math, looking at my backyard, it's not possible to squeeze that into an acre (an order of magnitude off).