Eng4U Unit 5 Key Questions

Topics: Population ecology, Predation, Population Pages: 7 (1518 words) Published: January 15, 2013
Key Questions – Unit 5
Ahmad Moussaoui


a) The Canadian population is still growing despite its low birth rate because of a few factors. Canada is a developed country, with advances in public sanitation, medicine, and public health. All of which give Canada a low mortality rate. Immigration also plays a big part in Canada’s population growth, as Canada is considered by many to be the most multi-cultural country in the world.

b) There are many factors contributing to Canada’s low birth rate of 1.6 children per woman.

* Education: Many women in Canada are educated and choose to pursue careers as opposed to assuming the role of a housewife. This pursuit discourages women from having children at a young age. It also discourages them from having many children, in order for them to balance family and career life. * Cost of living: Families used to have many kids in order to provide more workers for the farm. Times have changed and machines are now available to perform that work. Canadians now prefer living in cities as opposed to farms, and the cost is high for large families in the city. This higher cost of living discourages women from having more children.

c) If Canada’s population were to start declining, the ecological footprint of the average Canadian would not decline. This is because the ecological footprint depends on the individual. Regardless of population size, there will still be the wealthy citizens that use up a lot of resources, the middle class, and the poorer citizens.


a) The issue of global warming could be an example of “the tragedy of the commons” because nobody owns the atmosphere or the air we breathe, therefore why should it be important to conserve it? People can feel as though if they stop polluting the air, other people will still continue to do so either way.

b) If that view is in fact correct, then there is really no physical way to stop all people from polluting. A better approach would be to educate the population of the consequences of their actions for everyone.

59. CIDA funded aid project: Afghanistan

a) CIDA is committed to aiding Afghanistan, a country which has suffered years of conflicts, to become self-sufficient. Afghanistan has a very young population, which needs training in order to succeed at becoming self-sufficient. CIDA also strives to encourage human rights and gender equality in Afghanistan. These conditions will make it possible from women to better feed their families. b) Through CIDA, Canada has been able to provide just over $234 million in aid to Afghanistan. These funds have been used to repair damaged soil in order to attract investors to the country. Also to train security forces and to build a stronger government, which is vital for success in a developing country. Training is also being provided to farmers in order to yield better crops and feed more people.


Quadrat Number| Number of Voles|
1| 2|
2| 0|
3| 4|
4| 1|
5| 5|
6| 3|
7| 0|
8| 4|
9| 2|
10| 1|
Total| 22|

Ecological Area: 230 m2

Average voles per quadrat = total # of voles / # of quadrats

= 22 / 10

Average voles per quadrat = 2.2 voles per quadrat
Average Ecological Density= 2.2 per m2
Average population of Voles is found using the following formula:

N = De x Se

= 2.2/m2 x 230 m2

Average population of Voles = 506

b) Random dispersion.

Ecologically suitable area: 750 km2 (750 000 m2)
Population: 600, 000

Ecological density formula:

De = N/Se

= 600000/750

= 800

Therefore the ecological density of Caribou herd is 800 per km2.


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