Probably either methane and carbon dioxide release or groundwater contamination by heavy metals, ammonia or whatever other crap comes off of the decomposition.
FINANCIAL PROBLEM one of the common problem of most students
The user is the most common problem and most common cause of other problems.
Air Pollution, its all around us (in varying degrees)
The most common type of ocean pollution is garbage or sewage. They are readily dumped into the ocean by ships and countries located along the ocean.
Pollution and sickness
probably air or water
A type of air pollution which is most common around cities is smog. The most common causes of smog are automobile exhaust and industrial plants.
The most common ear problem is an ear infection.
The city of Los Angeles is generally considered to have America's worst air pollution problem. Most of California's metro areas have bad air pollution.
Ink takes 1000 years to decompose, most of the time if you look at a polluted landfill you'll see that most of the pollution is ink.
A sanitary landfill must have a barrier to keep contaminants from leaking into the environment. They often use a semipermeable membrane to line the landfill for this purpose.
Besides water temp-- which is governed by location of channel, most common problem is current. Also need to be concern about shipping channels within the channel. Another overriding problem has become pollution.