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 square miles in 1 acre? The answer is 0.0015625. We assume you are converting between square mile and acre. You can view more details on each measurement unit: square miles or acre The SI derived unit for area is the square meter. 1 square meter is equal to 3.8610215854245E-7 square miles, or 0.00024710538146717 acre. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between square miles and acres. Type in your own numbers in the form to convert the units!