Managing Ocean Pollition

Question 1

Terrestrial runoff

Answer 1

Water running from land polluting oceans for example :

Fertilisers rich in nitrogen
Oil from roads
Waste from industrial activity
Treated and untreated sewage
Domestic waste water including plastic micro beads
Litter especially plastic

Question 2

Waste disposal

Answer 2

Rubbish dumped from shipping in North Sea up to 40% marine litter comes from shipping 20,000 tonnes of waste

Over 80% of all waste dumped at sea is material that has been dredged elsewhere

Question 3

Oil spills

Answer 3

Leaks can occur from seabed oil wells e.g BP oil rig explosion in Gulf of Mexico led to 4 month oil spill that allowed over 6,000 tonnes of oil to escape

Question 4

Pollution from the atmosphere

Answer 4

Ocean naturally absorbed carbon dioxide making water more acidic