Exam 14: Ocean Water and Ocean Life

The open ocean, regardless of depth, where animals swim or float freely is called the abyssal zone.

Plankton are organisms that swim freely in the ocean.

Technically, algae are called ________.

Salinity in the ocean is highest in regions where ________ is high and ________ is low.

Most marine animals live near the surface of the ocean because of ________, which supports photosynthesis by marine algae that form the basis of the food chain.

Animals capable of moving independently of the ocean currents, by swimming or other means of propulsion, are called ________.

________ level refers to each of the feeding stages in the food chain.

Desalination is currently our most productive and efficient source of fresh water.

The aphotic zone is the near-surface zone of the ocean where light is strong enough for photosynthesis to occur.

The speed of sound in the ocean has been measured to determine changes in ________ of the ocean.

Desalination is not a viable source for producing large amounts of fresh water because of ________.

The upper part of the ocean into which sunlight penetrates is called the ________ zone.

Productivity in the oceans is highest in tropical regions.

The ________ zone refers to the area where the land and ocean meet and overlap.

The dissolved materials in seawater are thought to originate from chemical weathering of rocks on the continents and also from ________.

________ refers to the total amount of dissolved materials in water.

Clams, sponges, and crabs are all examples of ________ organisms.

The proportion of dissolved substances in seawater is expressed as ⁰/₀₀ which is the same as ________.

What is the relationship of marine life zones to the distance from a given shoreline? Briefly discuss the factors that control or cause these different zones. Where are these factors on Figure 14.12 below and is one factor more important than the others?