Answer: Controlled burning allows the Forest Service to control the effects of fire, its location and intensity. This poses a Positive effect. To be honest, there is nothing that poses a threat to controlled fires, unless it gets too big and gets uncontrollable, which rarely happens.
Sooo.. Is this a question lol?
Learning a second language allows cross-cultural communication, and opens the door to an entire network of people that a person might not have had contact with before. It allows for an exchange for cultural norms and practices, furthering one's education in respect to life different than their own.