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Vladimir79 [104]
3 years ago
13

What are 5 factors needed to support life(actually list the please)

Biology
1 answer:
lisabon 2012 [21]3 years ago
6 0
Water, Oxygen, Food, Heat, Pressure
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A doctor reports a single occurrence of a disease to the Centers for Disease Control as a disease outbreak. Which of these facto
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The disease has been absent from the population for a long time.

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You are conducting a case control study to determine if an association exists between melanoma and indoor tanning. From a statew
Aleksandr-060686 [28]

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a. Odds ratio = 1.58

b.  Inasmuch the odds ratio is greater than 1, this means that higher odds of melanoma exist in people exposed to indoor tanning, than in those not exposed to indoor tanning

Explanation:

For case  study                                                  

Let 'a'  represent the total population of people with melanomia = 696                                                      

Let 'b' represent the total number of people with melanomia exposed to indoor tanning  =  1107 – 696 = 411 people

For  control study

Let 'c' represent the total population = 1500

Let 'd' represent the total number of people not exposed to indoor tanning = 1500 - (0.428 * 1500)

                                                          =  1500 - 723

Total number of people not exposed to indoor tanning   = 777 people

                                                       

a. Odds ratio = (a/b) / (d/c) = (696/411) / (777/723)

                                                = 1.69 / 1.07 = 1.58

b. Inasmuch the odds ratio is greater than 1, this means that higher odds of melanoma exist in people exposed to indoor tanning, than in those not exposed to indoor tanning.

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How does sexual reproduction lead to variation of traits in a population?
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One gets together with another and it happens then a child comes
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