Freshwater and Saltwater Ecosystems

Ponds are _______ and ________ than lakes?

• smaller and shallower
• fatter and larger
• wider and larger
• longer and wider

Which of the following describes a function of a wetland

• Trap and filter pollutants
• add nutrients
• reduce flooding
• controls sunlight

In which of the following aquatic ecosystems are both littoral and benthic zones most likely found in ?

• Open ocean
• coral reef
• lake 
• none of the above

Amount of dissolved salt

• estuary 
• eutrophication
• salinity
• runoff

In a freshwater ecosystems, organisms are adapted to changes in...

• water depth
• temperature
• salinity
• all of the above

Which of these determines what types of organisms live in water?

• water temperature
• oxygen levels of water
• sunlight & nutrients
• water temperature, oxygen levels, sunlight & nutrients

The zone that exists in by the shore; sunlit water 

• tropical
• littoral
• benthic
• eutrophic

Microscopic organisms that float near the surface of the water are called

• plankton 
• littoral 
• benthic

of or relating to living water that isn't salty

• desert
• producer 
• freshwater
• predator

an animal that eats both plants and animals as food

• omnivore
• niche
• herbivore
• carnivore