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Eng4U Unit 5 Key Questions

Decent Essays

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SBI4UB
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Key Questions – Unit 5
Ahmad Moussaoui

57.

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 …show more content…

This results in a higher chance that the cub will live to its maximum age.

64.

1975 population: 28000
1976 births: 900
1976 deaths: 1600

Net Population Change: (b+i) – (d+e)
= (900 + 0) – (1600 + 0)
= 900 – 1600
= -700

Net Population Change % = -700/28000 x 100
= - 2.5%
The population change of Peary Caribou is -2.5%

65.
a)

b)

c) The population appears to follow the logistic growth model. Its mathematical equation is:

d) The carrying capacity of the container appears to be 600.

66.

a) The two species appear to have a predator and prey relationship.

b) Species A is the predator and species B is the prey. When species B’s population increases, it allows for the increase in population for the predator species.

c) The population dynamics of species A lags behind species B because the predator’s food needs to be abundant in order for its population to increase. As the prey population increases, it creates the food resource necessary for an increase in the predator population. As the predator population increases, more prey are killed and less food becomes available, resulting in a decreased predator population. The cycle can start again when the population of prey increases yet again.

67.

a) The type of competition was interspecific competition.

b) Connell showed that the realized niche of the barnacle semibalanus was the same as its fundamental niche by clearing the upper tidal reach of Cthamalus so

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