Answer all 4 Questions as stated.

1.  What is the IPAT formula, and what do each of its variables mean? Do you think it is realistic to think that Americans could get their environmental impact close to that of a person living in an undeveloped country by using renewable resources and environmentally friendly technology? Why, or why not? 

Your response must be at least 200 words in length

2.  Discuss how the process of speciation occurs and describe the two types of speciation. Use the internet to search for an example of each type, and provide a brief description of your examples. Be sure to include a citation for your source in APA format. 

Your response must be at least 200 words in length.

3.  Describe the four stages of a demographic transition. How does the improvement of women’s lives help to reduce birth rates and allow a country to complete the demographic transition? 

Your response must be at least 200 words in length

4.  What is a keystone species and why does it play an important role in an ecosystem? Do you think that any one species or set of species is truly more important than others? Why, or why not? 

Your response must be at least 200 words in length