Lesson 1 Flashcards
What are natural resources?
Resources found in the natural environment which we can exploit or extract for our needs.
What are the four categories of natural resources?
Renewable resources that can be regenerated (soil, trees, fish)
Non-Renewable—resources that are limited and cannot be replaced once used (fossil fuels)
Flow Resources—resources that are replaced by natural actions and must be used when and where they occur (Sunlight, wind)
Other Resources—all other resources (tourist attractions)
What are three Rs? Which is the most effective?
Recycling: The Item is destroyed when you no longer want it, but the material in the item is recovered for reuse. The environmental cost of obtaining the raw materials for the item is avoided.
Reusing: The item is used by someone else when you don’t want it. The environmental cost of manufacturing the item is avoided.
Reducing: The item is neither purchased nor produced in the first place. Fewer new items are produced.
What is sustained yield management?
Managing a renewable resource responsibly so that it does not disappear. This requires us to use the resource more slowly than it reproduces. This ensures that the resource is available for future generations.
What are some advantages and disadvantages of agribusiness?
Pro: They have led to more intensive and efficient farming, as well as cheaper
food prices.
Con: However, they have also led to a loss of family farms and good farming
jobs, along with a rise in the use of temporary labor and complaints
about health and safety violations. Much of the criticism over the use of chemical pesticides and herbicides, along with unsustainable land use is because of agribusiness.
What are three farming issues in Canada today?
- Temperature and moisture play a large part
in agriculture - Changes: the number of farms and farm workers has been decreasing
while the average farm size has increased; more work is done by machines - Loss of land: Much of Canada’s best agricultural land is lost to growing
cities. - Pesticides and fertilizers: While valuable for protecting crops and
helping them grow more quickly, they can harm the ecosystem and
consumers. - Organic farming: While it is increasing in popularity, there are no
regulation or certification standards in Canada - Genetically Modified Organisms (GMOs): Most of the science and
health issues are misunderstood and exaggerated but there are serious
cons about the corporate practices.
What is the difference between commercial and non-commercial forests?
Commercial Forests—contain trees that can be harvested profitably. Fast growing, easy access to transport, more valuable wood
Non-Commercial Forests—those that are not profitable to harvest. Slow growing, limited transportation options, harsh climate
Which type of forestry is best for the environment and which is best for
forestry companies?
Clear-Cutting—Loggers remove every tree. (Best for forestry companies)
Shelterwood Logging—clear-cutting of only part of the old growth forest (mature trees)
Selective Cutting—harvesting only mature trees of a desired type, size or quality for a specific purpose. (Best for the environment)
What can happen if we continue to overharvest trees?
Large areas of animal habitat are being destroyed leading to the extinction of many animal species.
Natural tree diversity is often lost with replanting because the trees replanted tend to be all of one type of tree (the most profitable)
Where is commercial fishing mostly located?
Primarily located on the East and West Coast, with a smaller fresh-water industry in some provinces.
What are three concernes about aquaculture?
- Health and Environmental Issues
- Animal Protection
- Chemical pollution
What happened to the cod industry in Atlantic Canada?
The Atlantic fishery abruptly collapsed in 1993, following overfishing since the late-1950s, and an earlier partial collapse in the 1970s. It is expected to recover to historical, sustainable levels by 2030.
Why does Canada use so much water?
We often take water for granted—seems unlimited. Canadians use about 330 liters per day for personal use.
What do we use water for in Canada?
Extraction—the process of taking water from a source to be used and then it is returned to the store—ex power generation, fishing, etc.
Consumption—taking water from a source to be used but it is not returned to the store—ex bottling, bulk water shipments.
What is a future water concern in Canada?
As population/power demand increases more water is needed by Canadians and Americans (who share a lot of our water sources)