11 - Oceans Systems

Question 1

moves water around globe

Answer 1

thermohaline circulation

Question 2

water + CO2 into carbonic acid, + H+(ion). There has been ~25% more than pre-industrial in the ocean

Answer 2

acidification

Question 3

absorbed CO2, ~2G tonnes/y

Answer 3

carbon balance

Question 4

non-target organisms caught along with fishing for target species, ~25% as waste

Answer 4

bycatch

Question 5

commercial fishing using lines with many baited hooks

Answer 5

longline

Question 6

destructive fishing, heavy nets dragged along the sea floor

Answer 6

bottom-trawling

Question 7

seafood farming, fastest-growing food production,
nearly half of the fish produced worldwide, serious environmental concerns, salmon is the predominant farmed species in Canada
provides important economic opportunities for remote communities

Answer 7

aquaculture