Vocab 3/4 Flashcards
1
Q
Disturbances
A
Temporary and abrupt changes that disrupt normal environment of an ecosystem
2
Q
Succession
A
Slow changes that occur in a community
Natural change over time
3
Q
Primary succession
A
Formation of an ecosystem from scratch
Caused by:
- glaciers
- volcanoes
4
Q
Pioneer species
A
First organisms to appear in an area after a disturbance
5
Q
Lichens
A
Decomposes of rock to form soil
6
Q
Secondary succession
A
New ecosystem with soil
Caused by:
- forest fires
- hurricanes
- agricultural land clearing
- tornado
- tsunami
7
Q
Natural disasters
A
Major disturbances in an ecosystem
