[CHAPTER 10. MARINE COMMUNITIES] A massed group of individual fish of a single species and size class packed closely together and moving as a unit is called a ____.

[CHAPTER 2. PLATE TECTONICS] If two oceanic plates collide and one is older and cooler (and therefore, denser) than the other, what will happen?

Which of the following gives the balanced equation for this reaction?K3PO4 + Ca(NO3)2  Ca3(PO4)2 + KNO3

[CHAPTER 4. WATER AND OCEAN STRUCTURE] What processes are responsible for the ocean’s salinity?

[CHAPTER 11. USES AND ABUSES OF THE OCEAN] What accounts for most of the total value of world trade transported by sea?

[CHAPTER 10. MARINE COMMUNITIES] Why are harmful algal blooms, or HABs, so dangerous?

[CHAPTER 3. THE OCEAN FLOOR]   The deep-ocean basin includes which of the following features?

[CHAPTER 10. MARINE COMMUNITIES] Many populations that interact with one another at a particular location form a ____.

[CHAPTER 10. MARINE COMMUNITIES] An example of a zooplankton that is very important to many pelagic communities is ____.

[CHAPTER 4. WATER AND OCEAN STRUCTURE] Sound can travel for much greater distances through water than light waves can before being absorbed because ____.