Which of these facts about wild boars is best supported by the evidence provided? wild boars were brought to the united states by humans. wild boars have quickly spread through the united states. wild boars have established successfully in areas with warm climates. wild boars have a high reproductive rate and no natural predators.

The correct answer is wild boars were brought to the United States by humans.

Wild pigs are also known as wild boars are an Old World species and are not local to the United States. The very first wild pigs in the United States arose mainly from the domestic stock brought to North America by the initial European settlers and explorers.  

Various years later, the Eurasian wild boar was incorporated into the parts of the United States for the purpose of hunting. Later, inbreeding took place in the regions where Eurasian wild boar and domestic pigs were found in combination in the wild. Due to which various hybrid populations are existing at present in the country.  

the answer is d.) homologous; have mammary glands

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.