The traditional view of mangrove forests as wastelands and unhealthy environments promote their degradation because

Raditionally mangrove forests were viewed as wastelands and unhealthy environments. People therefore reasoned that their removal would improve the health ...

“other instruments such as gravimeters and magnetometers are also used in the search for petroleum. extracting crude oil normally starts with drilling wells into an underground reservoir. when an oil well has been tapped, a geologist (known on the rig as the "mudlogger") will note its presence. “ this is what i found on google i hope it

The answer is d) by requesting advice on science internet sites