Ecological Stability

Does deforestation contribute to global warming?

• No, trees aren't that important

• Sometimes because only the cutting down of Maple trees contributes to global warming

• No, deforestation adds methane to the atmosphere, which makes the Earth cooler

• Yes; less trees means less CO2 is turned into oxygen.

Tags

NGSS.MS-ESS3-4

NGSS.MS-ESS3-5

The cutting down of trees on a large scale in Brazil is an example of ______.

• Carbon-oxygen cycle

• Erosion

• Deforrestation

• Grazing

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

NGSS.MS-LS2-5

A group of people in your town decide they will each use a portion of their yard to plant a variety of native plants. Fifty families replace a part of their yard with native plants. Which of these is most likely to happen?

• 
  The population of the town will decrease.

• 
  The biodiversity of the town will increase.

• 
  Native animals will move away.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

NGSS.MS-LS2-5

What process caused the forests to recover?

• 
  secondary succession

• 
  primary succession

• 
  keystone species

The island country of New Zealand has no native mammals. Its ecosystem is based on birds. Humans brought cats to the island. Cats hunted the kiwi, a flightless bird, almost to extinction.

Which word best describes cats in this scenario?

• 
  invasive species

• 
  keystone species

• 
  native species

Tags

NGSS.MS-LS2-4

Beavers are a keystone species in North America. The dams beavers build create ponds where many other organisms live.  

What will most likely happen to an ecosystem if humans remove the beavers?

• 
  The ecosystem will change.

• 
  The biodiversity of the ecosystem will increase.

• 
  The ecosystem will become stable.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

The normally gradual change in species competition in a given area is called ______ _______

• resilience factor

• inertia

• volcanic eruption

• ecological succession.

The two aspects of stabilityin ecosystems are resilience and _______.

• resilience

• succession

• inertia

• topography

Lichens are an example of a ____________ species.

• resilience

• inertia

• pioneer

• primary

Identify which type of succession occurs in an abandoned farm field.

• Primary Succession

• Secondary Succession

• Resilience Succession

• Inertia