Aquatic Ecosystems Review

Water _________ sunlight; thus photosynthesis in lakes and oceans does not occur below 100 meters.

Tags

NGSS.MS-LS1-6

The aquatic ecosystem adversely affected by runoff is (a)   .

• rivers
• oceans
• estuaries
• all of the above

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Match the following scenarios with their outcomes in an estuary where fresh water meets salt water.

• When organic matter and minerals settle due to mixing.

• harbors to be created.

• When saltwater intrusion occurs in freshwater areas.

• limestone to fall to the bottom.

• When calcium carbonate precipitates out of the water.

• nutrients to fall to the bottom.

• When natural formations provide shelter for boats.

• freshwater ponds to become salty

Tags

NGSS.MS-ESS2-4

NGSS.MS-LS2-3

NGSS.MS-LS2-4

(a)   distinguishes nekton from benthos.

• One lives in a freshwater ecosystem
• One swims freely and the other ofte
• One is a predator and the other is
• none of the above

Which of the following statements is not correct?

• Lakes may contain a region that receives little sunlight.

• Wetlands help remove pollutants from water.

• Swamps are dominated by woody shrubs or water-loving trees.

• Rivers generally move faster, and their oxygen levels decrease as they approach the ocean.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

(a)   are threats to ocean ecosystems.

• nutrient runoff and industrial wast
• entanglement of marine mammals in t
• sewage and algal blooms.
• All of the above

Tags

NGSS.MS-ESS3-3

NGSS.MS-LS2-5

Estuaries are extremely productive ecosystems because they continually receive fresh nutrients from _______ and _______.

• rivers, oceans

• lakes, ponds

• marshes, swamps

• streams, springs

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

What causes most coastal pollution in the United States?

• lakes and ponds

• industrial waste and sewage

• over fishing

• temperature changes

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-5

As they flow down a mountain to flatter ground, rivers generally become

• wider.

• warmer.

• slower.

• All of the above

What is the natural nutrient enrichment of a shallow lake, estuary, or slow moving stream called?

• oligotrophy

• eutrophication

• upwellings

• red tides