Which part of the Colombian exchange involved both plants and animals?

The Columbian Exchange spread different plants all over the world. It spread sugar cane, bananas, wheat, and coffee beans to the New World. It also spread maize, pineapples, tomatoes, and potatoes to the Old World. The Columbian Exchange brought horses, cattle, sheep, goats, pigs, and a collection of other useful species to the Americas. Before Columbus, Native American societies in the high Andes had domesticated llamas and alpacas, but no other animals weighing more than 45 kg (100 lbs).