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Population of Animals over time

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by

Sam Glowicki

on 7 February 2011

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Transcript of Population of Animals over time

Population of Animals over Time Year 0 1 2 3 4 5 6 7 8
Number of Animals 40 23 9 3 1 0 0 0 0
Decrease of Population 0 17 14 6 2 1 0 0 0
Change as a Fraction 0/40 17/40 14/23 6/9 2/3 1/1 0/0 0/0 0/0
Change as a Percent 0% 42.5% 61% 33% 60% 100% 0% 0% 0% By sam thanks for watching I chose a line graph because it is easier to follow, is laid out better than a bar graph (in my opinion) and line graph is used to show changes in data over time. The pattern that I saw was a downwards trend which was about 60% every year. The amount of animals alive in year 9 would be 0 because all of our animals died in the 5th year. If there were no births to add to the population each year it would cause an extra decrease in the population because of the extra animals added to the experiment. The population that remains from year to year would be just over a year, About 1.2. If I repeated this experiment with more animals, it would still see the same percentage. Half the population would still die in less than 2 years. Some environment factors could be natural disasters such as floods, hurricanes, earthquakes, and diseases.
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