finite arable land. Soil pollution occurs when the presence of toxic chemicals, pollutants or contaminants in the soil is in high enough concentrations to be of risk to plants, wildlife, humans and of course, the soil itself. Arable land is turning to desert and becoming non
Marijuana (thc) will be present in your blood for approximately 2 to 3 days after you have used it. It may be remain in your bloodstream past 2 to 3 weeks if you are a frequent and heavy user. Source(s): http://wiki4weed.com/how-long-does-weed-...
How long does weed stay in your system (blood)? In the blood weed can be present for up to 2-3 days after use, however in cases of heavy and frequent use it can be detected after up to 2-3 weeks.ow long does weed stay in your system (blood)? In the blood weed can be present for up to 2-3 days after use, however in cases of heavy and frequent use it can be detected after up to 2-3 weeks.