I found it.
1. The number of living people affects the earth because each person produces a carbon footprint, usage of resources, especially natural resources and space, and production of waste, which also produces and encourages harmful bacteria. You can read more on this website. http://www.globalissues.org/issue/198/human-population
2. To answer the question about the standard of living and how it affects the carrying capacity of the earth think about a very rich family that has 5 cars that produce fumes. Families/ individuals that want these luxuries make car factories produce more cars that eventually become junk cars and are added to an already over flowing dump. You can replace the cars in this example for laptops, iPhones, etc. On the flip side, a family who is not educated may resort to a home or spiritual remedy that harms the earth. Maybe by helping the spread of disease or bacterial growth. You can use the same source or look for a .org source.
3. Countries with more people need more food. The use of pesticides has harmed Earth and its carrying capacity. http://www.panna.org/issues/pesticides-101-primer.
4. You can use this site for more information about new ecosystems. http://www.sciencedaily.com/news/earth_climate/ecosystems/
*Depending on what your instructor wants you can get the author and publication date from the web page.
I don't plagiarize anything. I am almost 30 years old and I am working on my third college degree. So, I know some stuff, don't worry. This information is not plagiarized, but thank you for thinking that it must be.
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