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-...
Also, it stays in your system for much longer periods of time than any other illegal drug. On average the weed will be stay in your system between a week and thirty day. However, in some extreme cases thc has been detectable in the body (urine and blood) for up to 180 days.For a hair drug test marijuana can stay detectable forever until that hair is cut.or a first time pot user, thc will remain detectable in the system for a period up to 7 days. For some casual weed user who have smoked weed 2-3 times each week, thc can be detectable for a period up to 21 days. Chronic users who smoke pot everyday can expect to excrete thc toxins for up to 90 days.