6.1.4.3 Changing Ecosystems

The process of one ecological community gradually changing into another is called ecological __.

A __ is stable and no longer goes through major ecological changes.

A volcanic eruption covers a field with lava, which hardens into rock.

• primary succession

• secondary succession

A forest is cut down to grow corn.

• primary succession

• secondary succession

Tags

NGSS.MS-LS2-1

__ species are the first species to inhabit new or disturbed land.

What is the main difference between primary and secondary succession?

• in primary succession, soil is removed or permanently covered

• In secondary succession, soil is removed or permanently covered

• in primary succession, the land can never recover to support life

• In secondary succession, the land can never recover to support life

What happens during aquatic succession?

• water fills in holes in the ground

• water dries up

• bodies of water fill up with sediment

• volcanoes erupt

Tags

NGSS.MS-ESS2-4

NGSS.MS-LS2-3

__ is when a body of water becomes too nutrient rich.

Eutrophication can cause a harmful build up of

• fish

• algae

• toxins

• sand

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

The balance between different parts of the ecosystem:

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

NGSS.MS-LS2-5