Mining The Deep Sea

https://youtu.be/7HoVwJH-_so

using the attachments and the video link about to answer the questions below. 400 Words 

1. According to the video clip from the Economist, why is the deep sea "the final frontier on planet Earth"? What are the needs and/or the advantages of seabed mining?
2. Childs shows us how Nautilus Minerals have legitimized seabed mining in Papua New Guinea despite rising social and ecological concerns. Dover also argues that we need to tighten regulations on deep-sea mining. Synthesizing these readings, what do you think are the disadvantages/negative effects of seabed mining?
3. Comparing the pros and cons of seabed mining, what is your own view on seabed mining? Do we need it? If so, when and how? If not, why?