Environmental Change Flashcards
1
Q
How can lichens be used to detect air pollution:
A
- kept alive by nutrients in the rainwater
- pollutants, especially sulfur dioxide, damage lichens and prevent their growth
- bushy lichen - clean air
- leafy lichens - small amount of pollution
- crusty lichens - polluted air
2
Q
How organisms can detect water pollution?
A
-harmful substances in water mean many aquatic invertebrate cannot survive
clean - mayfly larva
low - freshwater shrimp
high - water louse
very high - sludgeworm
3
Q
How environmental changes are measured?
A
Rainfall - rain gauge
temp. - digital thermometer takes continuous readings
oxygen levels
