Option C, Use seismographs to predict volcanic eruptions
Explanation:
People living near volcanoes proximity are at high risk during the eruption period of volcanoes. As the volcano erupts it releases harmful gases and also the hot molten lava flows out of it thereby disrupting every thing that comes in its way.
If people living in such areas are able to get pre information of volcanic eruptions then they can get time to shift to new safer place.
Answer: Through the transparent Earth (drawing) we can see its equatorial ... If on a globe of the Earth we connect all points with the same latitude, we get circles of ... we can divide it--like any circle--into 360 degrees, and the longitude φ of a .... for most of its course it runs in mid-ocean and does not inconvenience ...
I'm pretty sure hurricane watch is keeping an eye if any hurricanes are incoming using radars etc.. Whereas hurricane warning is if their is an incoming hurricane and people need to evacuate stay indoors so warning people of a hurricane
