Oceans and Ecosystems

What two elements make up the salt in the ocean?

• Oxygen and Hydrogen
• Silver and Gold
• Sodium and Chlorine
• Hydrogen and Sulfur

What is the name of the warm current found of the coast of North Carolina?

• Northwestern
• Gulf Stream
• Atlantic
• Hot Tamale

What is at the bottom of the chemosynthetic food chain?

• phytoplankton
• bacteria
• clams
• salt

What is the name of the deepest trench in the world?

• Gulf Trench
• Grand Canyon
• Ballard Trench
• Mariana Trench

How are marine organisms classified?

• What color and size they are
• Where they live and how they move
• What they consume and what they produce
• What their scientific name is and when it was discovered

What ocean zone does a great white shark belong to?

• benthic
• oceanic
• intertidal
• coastal

What describes intertidal organisms?

• They live in the midnight zone
• they are all microscopic
• they live in an area that can be wet or dry
• they are all benthic

Where does chemosynthesis occur?

• in the intertidal zone
• in estuaries
• in the neritic zone
• near hydrothermal vents

What organisms use sunlight to produce their own energy?

• producers
• primary consumers
• heterotrophs
• carnivores

Which of the following statements is false about estuaries?

• they are nutrient rich
• they filter pollutants
• they contain brackish water
• they have hydrothermal vents