Name THREE ways an ecosystem can change.
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How do humans affect ecosystems? Name TWO ways.
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Can a natural change to an ecosystem cause more damage than a change caused by people? Give an example.
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What does it mean to be EXTINCT? Give one example of an EXTINCT animal. (not dinosaurs)
It means all the members of a species have died out.
Name TWO causes of extinction.
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What does it mean to be ENDANGERED? Give one example of an ENDANGERED animal.
It means almost all the members of a species have died out. It's in danger of going extinct.
What does it mean to be THREATENED? Give one example of an THREATENED animal.
It means a species is in danger of being endangered. Its numbers are getting low.
What's it called when an old ecosystem is replaced with a new one?
SUCCESSION.
What are PIONEER species and/or communities?
The first species and/or community to live in an otherwise lifeless area.
What's the difference between PRIMARY and SECONDARY succession?
Primary is when pioneers appear as the first life, secondary is when new species replace old/existing ones in an ecosystem.
