Develop four general causal loop diagrams, one each for the four phases of the spread of nonnative

Fig 2). For each diagram depict the appropriate policy(ies) that would reduce impacts. Provide supporting background discussion of the diagram, the technical viability of the policy, and the costs implications. Draw from your readings and class discussion.Submission: Maximum paper length including diagrams and references: 10 pages, double spaced, 12-point font, minimum of 5 references, APA citation style.Relevant readings: Chapter 2 de Vries Lovett et al. 2016. Nonnative forest insects and pathogens in the United States: Impacts and policy options. Ecological Applications 26(5):1437-1455