Topic Test Answers

The salinity in salt marshes can vary throughout the day because _______. a.river flow changes throughout the dayb.the amount of salt water in a marsh depends upon ocean tidesc.daily winds and rains result in salt and fresh water mixingd.salt water collects in the lowest elevations

Coral bleaching occurs when a colony of polyps are under stress.

It is best to say that marine debris _______.a.is a hazard to marine animalsb.degrading ocean healthc.a pervasive, global pollution problemd.all of the above

Which of the following statements about coral reef preservation efforts is true?a.In order to preserve coral reefs, all aquarium trade in coral reef organisms must end.b.Legislation has had no impact on coral reef preservation efforts.c.Various preservation methods have had some positive impact on coral reef preservation.d.Education of fishermen has eliminated all coral reef loss.

Methane hydrates are _______.a.a potential new source of natural gasb.the largest reserve of methane on Earthc.releasing methane as the arctic warmsd.all of the above

What record did the Nereus break in May 2009?a.It became the first remote operated deep-sea robot.b.It dove to a depth of 6.8 miles.c.It explored an undersea mountain.d.It took the first videos of deep sea organisms.

Which of the following best defines sustainable fishing practices?a.Harvesting practices that maximize yields and profits.b.Harvesting practices that maximize the yield per fisherman.c.Harvesting practices that do not reduce the potential for future harvests.d.Harvesting practices that reduce the potential for future harvests.

The principle difference between where salt marshes and mangrove forests grow is _______.a.the salinity of the waterb.the amount of sunlight the plants receivec.the intensity of the waves along the coastd.the extent of human development in the area

Which of the following best explains the role of deep sea coral reefs in the environment?a.They are responsible for fouling fishing lines.b.They are a quick-growing food source for deep water predators.c.They provide a critical habitat for many other organisms.d.They are a record of past climate conditions.

Coral reef ecosystems support over a million different species. Please select the best answer from the choices provided

Aquatic organisms have only a predatory relationship with coral reefs.

A strategy to reduce, reuse, and recycle would improve ocean health by _______.a.removing marine debris from the oceansb.reducing the amount of garbage available to enter the oceanc.removing garbage from landfillsd.increasing the rate of plankton growth

Mangrove forests were traditionally viewed as _______.a.unproductive wastelandsb.valuable fish habitatsc.an erosion preventing habitatd.pollution filters

Which of the following best explains the environmental problems associated with trawling?a.Trawling always destroys sea floor ecologies.b.Trawling gathers fish indiscriminately.c.Trawling is too selective at gathering fish.d.All of the above

Which of the following best explains the importance of studying the ocean carbon cycle?a.The oceans have a significant impact on the levels of atmospheric gases.b.It is a new field of ocean science.c.The ocean releases one quarter of the carbon dioxide in the atmosphere.d.All of the above

Fish rely on coral for _______.a.shelterb.food supplyc.camouflaged.all of the above

Which of the following is the first step toward proposing solutions effectively?

Mangrove forests were traditionally viewed as unhealthy, unproductive environments.

Which of the following is not a goal of the Seafood Watch program?a.to promote sustainable fishingb.to identify unsustainable sources of fishc.to increase fish salesd.to improve ocean health

Which of the following is not a possible consequence of animals ingesting marine debris?a.injuryb.starvationc.suffocationd.malnutrition