Answer:
The positive effect is the exchange that happened between the Old and New World, and the negative effect are the diseases that Europeans brought to America that killed millions of Natives.
Explanation:
After Columbus discovered new continent many products that were unknown to people on one or other continent were exchanged. That was probably the most positive consequence of the Columbus discovery.
On the other side, diseases such as smallpox killed millions of Natives, which together with conquistadores led to extinction of certain tribes.
Exponential growth for the most part
Answer:
D. Tylenol offered full disclosure of the problem to the press, recalled its products nationwide, and set up emergency phone lines to take calls from consumers and health care providers.
Explanation:
The incident of 1982 involving Tylenol poisoning is cited as an example of the correct way to handle public relations during a crisis because the company was sincere and truthful in their statements, identified and addressed the affected parties, monitored the situation by establishing a phone line and they reviewed and learnt from the situation. They were able to implement the appropriate public relations approach to dealing with crisis.
