Aquatic communities

What are the 2 main types of aquatic communities?

• Marine

• Wet

• Freshwater

• Dry

Freshwater biomes occur ...

• In water containing no salt

• In water containing lots of salt

• In water containing sugar

• In water containing little salt

An example of a rapidly chaning community

• Rivers

• Lakes

• Oceans

• Ponds

Cold water is denser than warm water

• True

• False

The division of zones in oceans and lakes are based on ...

• availability of salt

• availability of oxygen

• availability of sunlight

• availability of rain

The littoral zone has

• low productivity and low biodiversity

• high productivity and low biodiversity

• low productivity and high biodiversity

• high productivity and high biodiversity

In what zone do mussels live?

• Littoral zone

• Limnetic zone

• Profundal zone

• Benthic zone

What is the hungraian name for "water flea"

• Vízibolha

• Molnárka

• Szitakötő

• Tiszavirág