Water Biomes and beginning of Ecology

Which is NOT a freshwater ecosystem?

• a river
• a lake 
• an estuary
• a stream

Estuary water should have 

• less salt than the ocean
• more salt than the ocean
• no salt

Which zone supports the least amount of life?

• photic
• aphotic
• neritic
• ocean

The plankton that are microscopic and plant like are called 

• zooplankton 
• phytoplankton 
• minnows

The plankton that is animal-like is called

• bacteria 
• phytoplankton 
• zooplankton 

Which type of lake has a lot of nutrients?

• Eutrophic
• Mesotrophic
• Oligotrophic

Microscopic algae and protozoa that float and drift in a body of water...

• Nekton
• Parasite
• Plankton

What is dissolved oxygen?

• The amount of O2 dissolved in water
• The amount of CO2 dissolved in water

Which of the following is not a freshwater ecosystem?

• Lake
• Ocean
• River
• Stream

The part of the river where fresh water meets the sea.

• estuary
• intertidal zone
• lake
• benthos