It's a school project
Bibliography Smithsonian, Ask. "Why Were Prehistoric Animals so Big?" Smithsonian Tween Tribune. N.p., n.d. Web. 02 May 2017. <https://www.tweentribune.com/article/tween56/why-were-prehistoric-animals-so-big/>. "Why Did Animals of the Ice Age Have Larger Tusks, Teeth, Etc than Their Descendants?"Quora. N.p., n.d. Web. 2 May 2017. <https://www.quora.com/Why-did-animals-of-the-ice-age-have-larger-tusks-teeth-etc-than-their-descendants>. "Why Were past Animals Much Larger than Present Animals, like the Irish Elk or Megalodon?" Quora. N.p., n.d. Web. 2 May 2017. Ross, Dr. Marcus. "Why Were the Animals So Big?" Answers in Genesis. N.p., 01 Apr. 2013. Web. 05 May 2017. <https://answersingenesis.org/extinct-animals/ice-age/why-were-the-animals-so-big/>.
