13. In regions of the world where the population is growing, and resources are scarce, the conflict between humans and animals is particularly problematic.
在世界上那些人口上升但资源匮乏的地方，人类和动物之间的对立问题尤其的突出。
14. The major benefit for animal testing is that it aids researchers in finding drugs and treatments to improve health and medicine. Many medical treatments have been made possible by animal testing, including cancer and HIV drugs, vaccines and many more. On the other hand, reliable alternatives（like computer simulation）to animal experimentation may not always be available.
动物实验的好处之一是它可以帮助研究者找到改善人类健康的药物。很多治疗方法都是通过动物实验获得的，比如癌症，HIV药物，疫苗和其他更多的。另一方面，其他的替代性方法(比如计算机模拟)并不总是可行。
15. The most effective solution to protect the world’s plants and animals is to limit the damage at its source. Companies that engage in practices that harm the environment should be required to demonstrate that they have taken all reasonable efforts to minimize the damage.
最有效的保护地球上动植物的办法就是从源头上控制伤害。那些对环境造成伤害的公司必须证明他们采取了所有的恰当的措施把伤害降到了最低。
16. Zoos can help to protect endangered species by allowing scientists to study animals and their behavior. Zoos are educational, interesting and fun, and children, in particular, enjoy learning about animals in zoos.
动物园有助于保护濒危动物通过让科学家去研究动物和他们的行为。动物园有教育作用，有趣和让人们获得快乐。孩子尤其喜欢在动物园里学习一些关于动物的知识。
17.Some people believe that zoos are unethical because zoo animals are kept in artificial environments with limited space and lose the hunting instincts.
有些人认为动物园是不道德的因为动物被关在空间有限的人工环境中。动物失去了觅食的本能。
