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Responses To Discussion Questions

Question

Discussion 4;

Define the terms: natality, fecundity, fertility and mortality. Various factors regulate population growth by affecting natality or mortality. Nest parasitism is practiced by brown headed cowbirds. Originally called buffalo birds, these birds were adapted to following migratory bison herds picking up seeds and insects from the droppings. Because they did not stay in one place long enough to nest, they started laying eggs in the nests of other species for them to raise. The young cowbirds are usually larger and more aggressive than the resident chicks. Discuss how you think nest parasitism might influence songbird populations. Do you think this is an example of a density-independent or density-dependent factor? Explain why. 

Discussion 5:

Population growth rates are small numbers, but they can have a significant impact on population. Let us compare three different scenarios and discuss some population growth issues.

a.Assume the world population at the beginning of 2016 was about 7.3 billion. If the projected 2016 average annual population growth rate for the world is 1.08% how many people will be added to the world by 2017?

b.If the 2016 world population grew at 0.54%, the same rate as the United Kingdom average (CIA - The World Factbook) then how many people would be added to the world by 2017?

c.If the world population grew at 1.93%, the same rate as the Kenya average (CIA - The World Factbook) then how many people would be added to the world by 2017?

d.Why do poorer societies have higher population growth rates than wealthier societies?

e.Why may affluence be worse for the environment than poverty?

Discussion: 6

Actions for Discussion: 6

Discuss two examples of how synthetic chemical pesticide use can create an imbalance in a natural ecosystem. Identify three major categories of alternatives to synthetic pesticides. 

Discussion 7

Actions for Discussion: 7

What is a clear cut and why are they so criticized in the US? Now imagine you and your family live in a country where the average annual income per household is only $300. However, you live in an area where the ground would support crops, all you have to do is cut down trees (clear cut). What would you do? How would you feel toward the family if they cut down all the trees to raise food or to provide additional income? 

Discussion: 8

Actions for Discussion: 8

List and define the three types of diversity. Based on your reading, what is the most important kind of diversity? 

Solution

Title: Responses To Discussion Questions
Length: 3 pages (1037 Words)
Style: MLA

Preview

Discussion 4;

Define the terms: natality, fecundity, fertility, and mortality. 

Natality is a term meaning birth rate used to calculate the change in a population of a specific species.

Fecundity is the rate of naturally giving birth to offspring.

Fertility refers to the ability of an organism to  give birth naturally to offspring

Mortality means the death rate in a population of a particular species in a specific period


******* Middle Part ************

Discuss two examples of how synthetic chemical pesticide use can create an imbalance in a natural ecosystem. 

The relationship that exists between a prey and a predator is one of the key factors that enhance the sustainability of a community. However, an introduction of pesticides sometimes potentially affects this relationship hence causing an imbalance in the ecosystem. If the pesticides introduced kills the prey the consequences also directly affect their predators due to lack of food.

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