B2g-population And Pollution Flashcards
What are some finite resources the human population uses?
Fossil fuels
Minerals
How does increasing human population cause pollution?
Increased resource use
Household waste
Sewage
Sulfur dioxide and carbon dioxide from burning fossil fuels
What does rising exponentially mean?
Increasing very quickly
What are the causes and consequences of global warming?
Carbon dioxide greenhouse gases trap heat in the atmosphere which causes global temperature to rise
What are the causes and consequences of acid rain?
Sulfur dioxide Reacts with water in atmosphere makes sulfuric acid Damages soils, buildings & statues Kills trees Changes PH in lakes
What are the causes and consequences of ozone depletion?
CFCs
Break down ozone
More harmful uv rays reach earth
Kill plankton
What is a carbon footprint?
The amount of greenhouse gases given off in a certain period of time
Why do developed countries cause a large proportion of pollution?
Demand more resources
More people have access to technology
How to lichens show pollution?
Monitor air quality
Damaged by pollution
Cleaner the air, more lichens
How do mayfly larvae show pollution?
Monitor water quality
Die in polluted water
Cleaner water, more mayfly larvae
What species show polluted water?
Water louse
Rat tailed maggots
Sludgeworms
How can pollution be measured?
By direct measurement of pollutant levels
By measuring the occurrence of indicator species
What are the advantages of using living methods?
Quick
Cheap
Easy
What are the disadvantages of using living methods?
Not always reliable
What are the advantages of using non living methods?
Reliable
Numerical data easy to compare between different sites
Exact pollutants identified
