Potential chemical weapons from living organisms. Toxins are effective and specific poisons produced by living organisms. They usually consist of an amino acid chain which can vary in molecular weight between a couple of hundred (peptides) and one hundred thousand (proteins).
1 NREL previously calculated wind farm land usage at about 85 acres per MW of capacity and capacity density of 3.0 Â±1.7 MW/km 2. 2  Yale calculated wind energy usage down to the turbine level, calculating 1-3 acres per turbine.
Variable Rate Seeding. Corn growers and university agronomists generally agree that a seeding rate of around 33,000 seeds/acre (spa) is necessary to produce 180 to 190 bu/acre. A rate of about 38,000 spa can produce 240 to 250 bu/acre, and a population of 42,000 to 43,000 spa has the potential to produce 300 bu/acre.