Changing Ecosystems

A pasture gradually returns to a forested state. This is secondary succession.

• True

• False

After lava covers the land, _________ occurs

• primary succession

• secondary succession

Tags

NGSS.MS-LS2-4

Final illustration (#8) shows

• pioneer species

• climax community

• only biotic factors

• only abiotic factors

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-2

A species that does not belong in a balanced ecosystem, comes in, and changes it (usually for the worse).

• flagnship

• umbrella

• invasive

• predator

Tags

NGSS.MS-LS2-4

A community with interacting abiotic and biotic factors.

• Ecosystem

• Keystone Species

• Invasive Species

• Aquifers

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-3

NGSS.MS-LS2-1

Land that is covered in water seasonally or permanently.

• Wetlands

• Aquifers

• Marsh Grasses

• Brackish Water

A species that plays a critical role in the health, maintenance, growth, or definition of an ecosystem.

• keystone

• invasive

• engineer

• predator

Saltwater Intrusion

• The movement of saltwater into a freshwater ecosystem

• When flood waters flood a city

• Happens only during floods

• Happens in rich soil

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-3

Brackish Water

• No organisms live here

• Crystal clear water

• Transitional areas with a mix of saltwater and fresh water

• Muddy water

Tags

NGSS.MS-ESS2-4

How do beavers affect nonliving parts of ecosystems?

Tags

NGSS.MS-LS2-4

NGSS.MS-ESS2-2