Topic Test Answers

What do the international efforts at reducing resource and ecological depletion have in common?a.They rely on voluntary participation.b.They came about through the work of the United Nations.c.They began in the 1980’s.d.They have nothing in common.

What is the biological impact of minimum catch sizes on a population of fish?a.The population comes to be dominated by smaller, slower-growing individuals.b.Older, less productive adults are removed, improving the population’s health.c.It applies a selective pressure for larger, faster growing fish.d.The fish in the population produce more and healthier eggs to compensate.

Cod has been a commercially important fish species since _______.a.the 13th centuryb.the discovery of North Americac.the 1960’sd.the 1980’s

Which of the following is a difficulty associated with environmental protection?a.costb.unpredictabilityc.sustainabilityd.all of the above

Why should fishery managers not view cod stocks as separate from other fish stocks such as capelin and mackerel?a.These fish species all form schools together and are therefore caught together.b.Capelin and mackerel both compete with cod for ocean floor habitat.c.These populations of these fish species are all related through the ocean food web.d.There is no reason for fishery managers not to view cod stocks individually.