Our Water Resources
Water is recycled in the biosphere by the
What is the water cycle?
Pollution that comes from many sources
What is non-point source pollution?
When river carry polluted water to the ocean
What is runoff?
National laws extend to 12 nautical miles from the coastline
What is the territorial sea?
The entire area of land that drains into a river
What is a watershed?
The Earth's surface is covered by _____% water
What is 70%?
The 2 main causes of water pollution
What are industrialization and population growth?
Fishing lines, 6-pack rings and plastic bags
What is plastic pollution?
The area extending 200 nautical miles from land
What is the exclusive economic zone?
Water collecting behind a dam forms this
What is a reservoir?
Of the 70% of water on Earth, 3% is freshwater but only _____% is accessible for drinking.
What is 1%?
Disease causing organisms
What are pathogenic organisms?
The % of ocean pollution that starts on land
What is 85%?
The pressure used to push water through a membrane filter that will not permit salt to pass
What is reverse osmosis?
Large amounts of groundwater are found in underground rock formations called
What are aquifers?
The fresh water from above-ground sources
What is surface water?
Heavy metals, household chemicals
What are toxic chemicals?
MARPOL
What is law that prohibits ship discharge of oil and plastics into the ocean?
Pollution discharge from a single place
What is point source pollution?
The land area from which groundwater originates is
What is the recharge zone?
The fresh water that seeps underground through the soil
What is groundwater?
What pollution concentrations increase up the food chain
What is biological magnification?
1974 Helsinki Convention
What is the law that controls land-based sources of pollution?
Pesticides, fertilizers gasoline and oil
What is organic chemical pollution?
The process of heating water so that freshwater evaporates leaving salt behind
What is distillation?