lecture 26 Flashcards
1
Q
What are the most abundant greenhouse gases?
A
water vapor & carbon dioxide. Methane and nitrous oxide are also important
2
Q
what are the 4 main causes of greenhouse gases
A
- burning fossil fuels
- deforestation
- livestock agriculture
- fertilization of rice fields
3
Q
How much greenhouse gases does Canada produce a year
A
700 megatonns
4
Q
how can the government help promote more sustainable practices
A
- implement carbon taxes
- implement energy taxes
- participate in technology transfer
5
Q
Define ozone depletion
A
a thinning of the ozone layer which allows more ultraviolet radiation to reach earth
6
Q
where is the ozone layer located
A
lower stratosphere
7
Q
what are the negative consequences to a depleted ozone
A
- increased risk of human health problems
- disruption to aquatic systems that are vulnerable to UV radiation
- reduced yield to some crops
