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-...
A typical hair drug test for daily, chronic users goes three months back. Your saliva generally holds detectable amounts of THC residue for 1 day but in some regular smokers for 3+ days. Exactly how long detectable amounts of THC will stay in your system is impossible to say for certain however.