1. Munk-Olsen, Trine. “Induced First-Trimester Abortion and Risk of Mental Disorder”. https://www.nejm.org/doi/full/10.1056/NEJMoa0905882. N Engl J Med. January 27, 2011
– This website explains what happens when women have an abortion can cause that person a mental disorder. Scientists conducted an experiment that included different sources to provide the amount of data of teenagers and women who had this disorder during 1995 through 2007 period. The way how they found their results, is to calculate the incidence rates among psychiatric contact to determine how they are felt confidently.

2. Kustin, Camille. “Traffic-Related Air Pollution Linked to Higher Miscarriage Rates”. http://blogs.edf.org/climate411/2009/12/14/traffic-related-air-pollution-linked-to-higher-miscarriage-rates/. EDF. December 14, 2009
The cause of miscarriage to increase in this article is traffic-related air pollution. Studies have concluded that these vehicles like cars, trucks, and busses that make into the effect of pregnant women around the world. The effects lead to decrease brain function and the increase of premature death, childhood allergies, and heart attack risk.

3. SJ, Ventura. “ QuickStats: Pregnancy, Birth, and Abortion Rates* for Teenagers Aged 15–17 Years — United States, 1976—2003”. https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5404a6.htm. CDC. February 4, 2005
This shows the statics teenagers aged 15 through 17 rates of pregnancy, birth, and abortion. The experiment was taking part around 1976 through 2003. In 1990, the rate of pregnancy has been declined for the three age groups that also potentially decrease throughout the years to come.

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