Measuring Environmental Change Flashcards
How can air pollution be monitored?
BY LOOKING AT PARTICULAR TYPES OF LICHEN
How can particular types of lichen monitor air pollution?
BY BEING SENSITIVE TO FHE CONCENTRATION OF SULFUR DIOXIDE IN THE ATMOSPHERE
If raw sewage is released into a river, what happens to the bacterial population in the water?
IT USES UP THE OXYGEN
What are mayfly larvae good inductors for?
WATER POLLUTION
How are Mayfly larvae good indicators for water pollution?
BECAUSE THEY’RE VERY SENSITIVE TO THE CONCENTRATION OF DISSOLVED OXYGEN IN THE WATER
If you find Mayfly larvae in a river, why does this indicate?
THE WATER IS CLEAN
Rat-tailed maggots and sludge worms indicate what?
A VERY HIGH LEVEL OF WATER POLLUTION
What are satellites used to measure?
THE TEMPERATURE OF THE SEA SURFACE AND THE AMOUNT OF SNOW AND ICE COVERAGE
What do automatic weather stations tell us?
THE ATMOSPHERIC TEMPERATURE AT VARIOUS LOCATIONS
Automatic weather stations contain what?
THERMOMETERS THAT ARE SENSITIVE AND ACCURATE
How do scientists measure rainfall?
RAIN GAUGES
What do dissolved oxygen meters measure?
THE CONCENTRATION OF DISSOLVED OXYGEN IN THE WATER
Some organisms are very sensitive to changes in their environment and so can be studied to see the effect of human activities - these organisms are known as what?
INDICATOR SPECIES
