Chapter 22 Lesson 3 How Ecosystems Change

________ is the process of one ecological community changing into another.

• Ecological succession

• Primary succession

• Secondary succession

• Climax community

The final stage of succession in a land ecosystem is the _________, which is stable for long periods of time.

• ecological succession

• primary succession

• secondary succession

• climax community

________ is ecological succession that occurs in areas where there is little or no soil.

• Ecological succession

• Primary succession

• Secondary succession

• Climax community

The first species that colonize new or undisturbed land are ________.

• pioneer species

• ecological succession

• climax community

• eutrophication

________ takes place in areas where ecosystems have been disturbed.

• Ecological succession

• Primary succession

• Secondary succession

• Climax community

Like land ecosystems, freshwater ecosystems change over time in a natural, predictable process called ________.

• pioneer species

• aquatic succession

• climax community

• eutrophication

________ is the process of a body of water becoming nutrient-rich.

• Ecological succession

• Primary succession

• Secondary succession

• Climax community

• Eutrophication

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

High nutrient levels in freshwater bodies support large populations of _____ and other microscopic organisms.

• algae

• soil

• fertilizer

• sediments

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

____ carried by rainwater and streams accumulate on the bottoms of ponds, lakes, and wetlands.

• Algae

• Soil

• Fertilizer

• Sediments

Tags

NGSS.MS-ESS2-4

____ from mosses and ferns settle in thin soil on the side of a volcano, and plants soon sprout.

• Algae

• Spores

• Fertilizer

• Sediments

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4