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APES 2.6 Questions and Answers

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APES 2.6 Questions and Answers ecological succession Natural, gradual changes in the types of species that live in an area Primary sucession begins in a place without any soil (landslides, flooding, sides of volcanoes, etc.) starts with the arrival of airborne PIONEER SPECIES such as L...

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  • December 1, 2024
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • APES
  • APES
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APES 2.6 Questions and Answers
ecological succession - answer Natural, gradual changes in the types of species that
live in an area

Primary sucession - answer begins in a place without any soil (landslides, flooding,
sides of volcanoes, etc.)

starts with the arrival of airborne PIONEER SPECIES such as LICHENS that don't need
soil to survive

soil starts to form as... - answer lichens & the forces of weather/erosion help break
down rocks into smaller pieces. when Lichens die, they decompose, adding small
amounts of organic matter to the rock to make soil

simple plants like mosses and ferns can grow in the new soil

When the simple plants die ... - answer more organic material is added to the soil, so
it thickens. Grasses/flowers/other plants begin taking over ....

those die, add more nutrients to soil...

shrubs and trees can survive now ...

insects/small birds/mammals have begun to move in

secondary succession - answer Succession following a disturbance that destroys a
community without destroying the soil. (ex - forest fires)

begins in a place that already has soil & was once the home of living organisms

Secondary succession occurs ______ and has _____________ - answer faster than
primary succession ; has different pioneer species than primary succession

the result of the succession process ... - answer a stable group of plants and
animals. doesn't always mean big trees. for example, grasses in Prairies & cacti in
deserts

indicator species - answer give early warning signs of damage/danger to a
community

(if trout are gone when they shouldn't be, it indicates poor water quality)

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