2. Mangrove forest had been classified by many governments and industries alike as wastelands, or useless swamps. Do you agree with that? Why?

No

Explanation:

Mangrove forests provide many economical and ecological benefits, such as being a nursery for many small fish and organisms that depend on the habitat to survive. They also provide rookeries for birds that make their nests within these forests. These fish are then sold to be consumed, thus the economical importance.

answer; /// i do believe that the correct answer is (a) boiling

they it depends on if one believes about radioactivity, they make a geiger counter beep but maybe it was going to beep anyway electronics do wierd things all the time or it was programmed to beep near certain metals.