The map shows the distribution of wild boars in the united states. wild boars are an invasive species to the united states. which of these facts about wild boars is best supported by the evidence provided? a. wild boars were brought to the united states by humans. b. wild boars have quickly spread through the united states. c. wild boars have established successfully in areas with warm climates. d. wild boars have a high reproductive rate and no natural predators.