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gently sloping outer edge of a continent that extends below the surface of the ocean toa maximum depth of about 200 metres
Shallow areas of a Continental shelf
commercial fishing that takes place within a few kilometres of shoreline. small fishing boats go out to sea and return to shore each day
ocean fishery using boats longer than 25m. The boats stay at sea several days befroe returning to shore with their catch
sustained yeild managment
use of renewable resource at a rate that allows the resource to renew itself. For example, the number of fish caught shouldnt be greater than the number of fishing maturity
The number of days when the mean daily temperature exceeds 5 degrees. Farmers only grow crops that will have time to ripen within the growing season of their area
substance such as manner or a chemical put on agriculture land to produce a greater crop yeild
chemical designed to kill unwanted plants(weeds). If used improperly, a herbicide can be a polutant
chemicals designed to kill harmful plants (herbicide) and harmful insects (insectiside)
ability of land to be used for a certain purpose. For example land capability for agriculture depends on soil quality, drainage slope and climate
process whereby machinery takes over humans or animals
mineral that yeilds a metal when processed, for example gold uranium and silver
non metallic mineral
mineral that yeilds non metals when processed. Salt, potash
any mineral that can be burned to produce energy. Coal, natural gas, oil
non-metallic minerals such as salt or asbestos used by industries and manufacturing
Sustained yeild forest management
use of forest resources that allow the forests to renew themselves
wood from coniferous(needle) trees
wood from broad leaved trees (oak and maple) they are used for furniture, boats, sports equipment etc.
the management of resouces in a careful and substaincial way
What are the three categories of fsih and explain
- groundfish- bottom feeders
- pelagic fish- open water feeders
- Shellfish- shells
What are the four factors influencing Agriculture
Why is land both a renewable and non renewable?
Where are the three areas that fruit is grown
- Niagara fruit belt
- Okanagan Valley of BC
- Annapolis Valley of Nova Scotia
Why were substicides made?
to help those in the 1930s during the depression whos crops were ruined by the a drought
What are the three ways of logging
- clear cut
- Selective Cut
Which areas suffer most from acid precip, why?
- maple syrup producing forests
- because the fumes from Eastern Canada and eastern united states
What are the three types of mining and what is each used for?
- Strip- oilsands, coal and other minerals
- Open pit- used to mine minerals that are near surface but may also extend deep into ground
- Underground- extract mineral ores from deep into earth