Aquatic Ecosystems

This means the amount of salt dissolved in water.

• salinity
• salutation
• saturation
• saltiness

Rivers are larger, deeper and flow ___ than streams.

• slower
• faster

What are areas where freshwater meets saltwater called?

• wetlands
• estuaries
• coastal byways
• intertidal zones

Tags

NGSS.MS-LS2-3

Which statement is true about ponds but NOT lakes?

• plants surround the shore
• surface water contains organisms that use sunlight for photosynthesis
• sunlight reaches the bottom of the body of water
• people fill them in with sediment to create land for houses and buildings

Wetlands contain which of the following?

• only freshwater
• only saltwater
• either freshwater or saltwater
• very little nutrients

If you see a wetland with trees growing in it, 

• it is most likely freshwater
• it is most likely salt water
• there isno way to predict if it is freshwater or salt water
• it is salwater AND freshwater

Runoff fertilizer and livestock waste from farms can add to the ____ of a pond?

• nutrients
• oxygen
• pollution
• biotic factors

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-5

Wetlands and estuaries purify water and filter out _____.

• dead organisms
• waste products
• salt
• pollution

Tags

NGSS.MS-LS2-5

The algae and microscopic organisms on the surface of lakes and ponds get their food 

• by photosynthesis
• by eating
• through their gills
• through their stomata

Tags

NGSS.MS-LS1-6

_____ are larger and deeper than _____.

• lakes, ponds
• streams, rivers
• lakes, oceans
• puddles, lakes