Hypothesis: The rate of survival should be higher when there is more diversity.
Method: I took 5 light colour crayons and 5 dark colour crayons and broke each of them into 2 pieces each. I then stripped off their covers. First I put 10 pieces of the light coloured crayons on the grass and selected as many crayons as I could in 5 seconds. Then I put 10 pieces of light coloured crayons and 10 pieces of dark coloured crayons on the grass and tried to select as many as I could in 5 seconds.
Variables:
Input Variables: Different colour crayons
Output Variables: Number of crayons collected
Controlled Variable: Location (Library)
Equipment:
Crayons of different colours
Hypothesis: I expected more crayons to be collected when the 2 colours were mixed especially since the number of crayons had also increased.
In the first case the number of crayons that survived: 4
In the second case the number of crayons that survived: 5
Survival rate: {(number of crayons survived)/(number of crayons) } *100
1st case :( 4/10) *100 =40%
2nd case :( 6/10) *100 =60%
Discussion: The rate of survival is higher in the second set than the first.
Evaluation: We should have taken more reading as that would have given us more accurate readings of natural selection. There is a good chance of human error also. One other weakness of the experiment is that: had I taken dark coloured crayons instead of the light ones in the first case then I may not have got the same survival rate.
Conclusion: When the diversity is high the rate of survival is high and when the diversity is low the rate of survival is also low. This proves that nature DOES find a way to maintain biodiversity.
References:
"Natural Selection." Answers.com. Answers, 2011. Web. 01 Mar. 2012. <http://www.answers.com/topic/natural-selection>.
Shah, Anup. "Biodiversity." Global Issues. Global Issues, 10 Nov. 2011. Web. 01 Mar. 2012. <http://www.globalissues.org/issue/169/biodiversity>.
Shah, Anup. "Biodiversity." Global Issues. Global Issues, 10 Nov. 2011. Web. 01 Mar. 2012. <http://www.globalissues.org/issue/169/biodiversity>.
"Natural Selection." Answers.com. Answers, 2011. Web. 01 Mar. 2012. <http://www.answers.com/topic/natural-selection>.