Use columbian exchange in a paragraph that lists some of the plants and animals that were new to the americas and new to europe.

The Columbian Exchange was a series of trade that took place in the 15th and 16th century. The exchange was named after Christopher Columbus. The trade was between the Americas, West Africa, and the Old World. The Columbian Exchange was the widespread transfer of plants, animals, culture, human populations, technology, diseases, and ideas.

answer; researchers typically cannot control people's sexual behaviors as would be necessary in an experiment;