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Anuta_ua [19.1K]
3 years ago
12

Which of the following statements correctly relates mutations and survival rates of plants?

Biology
1 answer:
kiruha [24]3 years ago
6 0
The third one is the right answer.
Mutations appear randomly and these mutations can either have possitive, negative or neutral impact on the individual's survival. The environment of the individual amongst other factor determine the net effect of the mutation. For example:
A mutation on a shade plant for bigger leaves would have a possitive impact on the plants survival due to the increase of the photosynthetic tissue area. On the other hand the same mutation on a desert plant would have a negative impact on the plant's survival due to the increase of the leaf area which leads to increased water evaporation off the plant.
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The majority of people in United States work in the___industry A agriculture B fishing C mining D service
nignag [31]

Answer:

D. service

Explanation:

Most people in the US work in jobs that require providing a service to others, whether it's at a restaurant, a department store, a school, etc. Yet, those who work in specialised jobs like agriculture, fishing, and mining are more rare because they need to live in a certain area that is optimal for such positions.

Thus, the answer is D.

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3 years ago
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Three billion years ago, Earth's atmosphere was very different. It included the gases methane and ammonia. If scientists found a
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This is the role of species in an ecosystem, consisting of such things as what it eats, when it eats, and where it lives.
Veronika [31]

The role of species in an ecosystem, consisting of such things as what it eats, when it eats, and where it lives is niche.

5 0
3 years ago
Which of earth’s layer is a liquid
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Answer:

The outer core

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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]

Answer:

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.

7 0
3 years ago
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