Unit Test — Unit test Answers

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

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 is not a characteristic of rivers and streams?a.vary in sizeb.mainly saltwaterc.part of the water cycled.flow toward other bodies of water

Due to decreased light penetration, which area of rivers and streams will have less diversity of plant life?a.the sourceb.the mouthc.the middle portiond.none of the above