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For my Assignment, I chose the article "Human Sex Ratio". I believe that I can add a section on the Environmental Impact on the Sex Ratio with how war and Economic Crisis affect the Human sex ratio for a population. I could Perhaps also find more evidence on factors that have not been discussed in the article.

James, W. H. (2009). The variations of human sex ratio at birth during and after wars, and their potential explanations. Journal of Theoretical Biology, 257(1), 116-123. 10.1016/j.jtbi.2008.09.028

Rousseau, Denis. "Hypothetical Role of Men's Sexual Activity in the Regulation of Human Sex Ratio: Analysis of the Sex Ratio of Post-War Abandoned Children." Bioscience Hypotheses, vol. 2, no. 1, 2009, pp. 43-45.

Helle, Samuli, Samuli Helama, and Kalle Lertola. "Evolutionary Ecology of Human Birth Sex Ratio Under the Compound Influence of Climate Change, Famine, Economic Crises and Wars." Journal of Animal Ecology, vol. 78, no. 6, 2009, pp. 1226-1233.

GRAFFELMAN, JAN, and ROLF F. HOEKSTRA. "A Statistical Analysis of the Effect of Warfare on the Human Secondary Sex Ratio." Human Biology, vol. 72, no. 3, 2000, pp. 433-445.

Bethmann, Dirk, and Michael Kvasnicka. "War, Marriage Markets, and the Sex Ratio at Birth." The Scandinavian Journal of Economics, vol. 116, no. 3, 2014, pp. 859-877.