Flashcards in Measuring Environmental Change Deck (17)
An organisms that is very sensitive to its environment can be used as a...
biological indicator or living indicator
When we say an organism is very sensitive to its environment we mean..
It cannot live in some conditions
What is a lichen?
A plant-like organism that grows on rocks, buildings and tree bark
Lichen will only grow in areas with...
Lichen are sensitive to what type of pollution?
The pollution in the air that lichen cannot stand is...
If there are lots of lichen growing in an area what does it mean?
The air is clean
If there is a lot of sewage in a river then there will be...
low oxygen levels
Maylfy larvae are insect-like organisms that live in..
Maylfly larvae can only survive in..
clean river water with lots of oxygen
If a river has low oxygen then it must be...
If mayfly larvae are found in a rive then it must be...
Sludgeworms are found in..
If you find sludge worms in a river then the river must be...
Sludge worms can survive in polluted water because...
they can survive with low oxygen levels.
Give 3 examples of non living indicators
Satellites to measure sea temperature
Rainfall gauges to measure rainfall
Dissolved oxygen meters to measure river pollution.