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chapter 21

Teacher: willie
Across
85% of what is dumped into the Mediterranean Sea by large cities?
Sewage from each house could be discharged into this.
Largest estuary in the US
Serious problems along coastal waters
HAB's are?
Large quantities of phosphates and nitrates produce what?
Marine life recovers from this oil rather quickly
Removes water coloration
What reduced excess nutrients and algal blooms in Chesapeake Bay?
Specialized chemical and physical processes remove pollutants are called ____ sewage treatment
Down
Oil supertanker that leaked millions of gallons of oil in Alaska
Point sources account for 60% by weight of ___?
Low oxygen levels
Physical process that uses screens and a grit tank to remove large float in objects is called ____ sewage treatment
Recovery of this oil takes about 10-20 years.
Mostly runoff of fertilizer and animal wastes
Oil as it comes out of the ground
Kills disease-carrying bacteria and some viruses
Biological process that removes organic wastes is called ____ sewage treatment
40% of worlds population live along the _____