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-...
Marijuana itself does not stay in your system, but the main chemical in marijuana, THC, does. In fact, it may stay in your system forever because it is stored in fatty tissues of various organs. Despite being stored in body fat, THC is only detectable for a certain amount of time.pproximate times, Cannabis (marijuana) can be detected through testing: Single Use: Blood Test: 2-3 days Saliva Test: 12-24 hours Urine Test: 2-3 days Hair Test: Up to 90 days, depending on how long your hair sample they use has been growing.