Botulinum toxins are the most lethal toxins known. For type A toxin, the toxic dose is estimated at 0.001 mcg/kg (Franz 1997); the lethal dose for a 70-kg person by the oral route is estimated at 70 mcg, by the inhalational route 0.80 to 0.90 mcg, and by the intravenous route 0.09 to 0.15 mcg (Sobel 2005).
1 hectare = 2.47105381 acres. .07 hectare= .17 acres per person. about 7500 square feet per person. While this figure produces a result of around 5-6 people per acre, there are plenty of caveats to consider. If the soil is not ideal, increase the land. If the growing season is short, increase the land.
How many acres per sq acre? There is no such thing as a square acre because an acre already is a square unit that is rectangular. So it's a bit of a paradox to try to square one when the dimensions arâ¦e already 66x660 feet (43,560 ft.) Scrooge McDuck once claimed to have three CUBIC acres of space in his money bin.