years Population Population of of wolves squirrels 1991 20 4000 1992 24 4600 1993 33 5000 1994 44 4800 1995 56 4500 1996 48 4200 1997 42 3900 1998 36...
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During the 1980s, people began to worry about the changes taking place among wolf and deer populations in one of Manitoba's provincial parks. A team of wildlife biologists was then hired to monitor the evolution of these populations over a period of ten years. The results of their study written in the following table.


Using Excel software, a first graph was drawn which shows the fluctuations in the populations of deer and wolves during the period studied. A 2nd graph was drawn, using a different scale, showing only the number of wolves according to the period studied.


1. Looking at the graphs, what factors could account for the significant increase in the number of deer between 1991 and 1992?

2. What could explain the decrease in the number of deer between 1993 and 1997?

3. The number of wolves was high in 1995. What could be the reason?

4. What do you think the population size of each species will be in the year 2005?

5. Should we be concerned about the changes occurring among wolf and deer populations in the study area? Explain your answer.

6. What will be the effect on the deer population if: there is a fire in the forest, the wolf population has scabies, a harsh winter continuesScreen Shot 2021-04-06 at 10.15.13 PM.pngScreen Shot 2021-04-06 at 10.15.03 PM.pngScreen Shot 2021-04-06 at 10.14.31 PM.png

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Variation de la population de loups et de chevreuilspour une decennie 5000 4500 4000 3500 3000 Population de loups Population 2500 - population de chevreuils 2000 1500 1000 500 0 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 Annees

years Population Population of of wolves squirrels 1991 20 4000 1992 24 4600 1993 33 5000 1994 44 4800 1995 56 4500 1996 48 4200 1997 42 3900 1998 36 3850 1999 38 3900 2000 38 3950

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