Aquatic Life

Which of the following describes "swimmers" throughout the ocean?

• planktons
• nektons
• benthos
• none of the above

Which of the following describes "floaters" on the surface of the ocean?

• planktons
• nektons
• benthos
• none of the above

Which of the following describes the flora and fauna at the bottom of the ocean?

• planktons
• nektons
• benthos
• none of the above

Which of the following eats on phytoplanktons?

• zooplanktons
• sharks
• fishes
• none of the above

What is the term used to describe a complex arrangement of producers and consumers?

• food web
• food pyramid
• food complex
• none of the choices

When the river or lake is very rich in nutrients, the algae covers the entire surface. This is called _______________

• erosion
• euthropication
• oxygenation
• precipitation

How many percent of earth is ocean water?

• 3%
• 90%
• 97%
• 100%

How many percent of earth is freshwater?

• 3%
• 90%
• 97%
• 100%

Which of the following is NOT a freshwater?

• rivers
• lakes
• streams
• oceans

What happens when an aquatic organism (like fish) dies?

• it will live again
• it will decompose
• it will become a plant
• it will disappear right away