Answer:
it introduced new products into their lives
Explanation:
The Colombian exchange took goods from Europe and sent them to the Americas and Africa, in exchange for some of their products. This also helped to better communicate ideas from one place to another. This would also help to get inventions from one place to another and spread it throughout the world. The Americans sent corn over to Europe, which is now a widely eaten vegetable.
No dangers I think unless you are traveling alone in deserts. The Silk road streches long into present Turcky. So, it depends on which part of the Silk Road you are going to.
Yes, studying how mayfly population affects the number of trout in a stream is ecology.
Ecology seeks to unveil how different organism relate with one another as well as their environment.
Ecology is basically the study of distribution,abundance and relation of organisms and their interaction with their environment.
Clarence Darrow is going to be the right answer