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-...
If the user smoked only occasionally, perhaps once a week or every ten days, the metabolites can be detected for up to 10 days. In regular users, THC remains in the blood for as long as 90 days. Heavy users, on the other hand, can have THC trace in their blood for as long as six months.he metabolites of marijuana can settle in the hair for months and even up to three years. The hair grows around 0.5 cm a month. It takes about 4 to 5 days from the time THC was absorbed for the hair to grow.