Dynamic and Resilient Ecosystems

The living things in an ecosystem.

• Biotic

• Photosynthesis

• Abiotic

• Variable

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NGSS.MS-LS2-1

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What is succession?

• The first species to populate an area.

• Is the same of intereaction

• Is Disruption to the physical or biological components.

• The series of predictable changes that occur in a community over time.

What are examples of pioneer species in a primary succession?

• Bushes and Shrubs

• Oak trees

• Mossess and Lichens 

• A rose Bush

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NGSS.MS-LS2-1

the process by which a new community forms where no community lived before 

• resource

• invasive (non- native) species

• primary succession

• competition

What is the first species you will see after a primary succession? (in picture)

• lichens

• grasses

• small plants

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NGSS.MS-LS2-3

What is ecological succession?

• A slow change in an environment

• A change that takes days in an environment

• No change

• Abiotic change

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NGSS.MS-LS2-4

A pioneer species is...

• large organism

• the first organisms to adapt to a new environment 

• best organism 

• Abiotic organisms 

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NGSS.MS-LS2-4

What is a dynamic ecosystem?

• An ecosystem that remains unchanged over time.

• An ecosystem that is constantly changing and adapting.

• An ecosystem with a fixed number of species.

• An ecosystem that is isolated from external influences.

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NGSS.MS-LS2-2

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Which of the following best describes resilience in an ecosystem?

• The ability to resist any change.

• The ability to recover quickly from disturbances.

• The ability to remain static.

• The ability to eliminate all predators.

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NGSS.MS-LS2-5

What role do keystone species play in an ecosystem?

• They have no significant impact on the ecosystem.

• They are the most abundant species in the ecosystem.

• They help maintain the structure and balance of an ecosystem.

• They are always the top predators.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5