Population and Pollution Flashcards
1
Q
What are the three main types of pollution?
A
- CO2, leads to global warming
- CFCs, destroy the ozone layer
- Sulphur dioxide, causes acid rain
2
Q
What type of growth does the world’s population have?
A
Exponential growth
3
Q
What is a carbon footprint?
A
How many greenhouse gases you produce.
4
Q
Where is the most growth occurring?
A
In under-developed countries, countries that don’t burn as many fossil fuels.
5
Q
How can pollution be measured?
A
- Direct methods
- Indicator organisms
6
Q
What are some examples of direct methods?
A
- Oxygen probe, measures O2 in ponds
- Specials chemicals measure nitrate pollution from fertilisers
7
Q
How can indicator organisms show pollution levels in water?
A
- Mayfly larva can only survive in clean water
- Water louse, bloodworms and mussels can live in polluted water
8
Q
How can indicator organisms show pollution levels in the air?
A
Lichen can only grow on trees and rocks in clean air.
