Demonstration Of Floor Wiper Exercise What Specific Instruments Were Needed To Gather Each Of The Following Types Of Data?

What specific instruments were needed to gather each of the following types of data? - demonstration of floor wiper exercise

(Demonstration) of the resilience and young people from the depths of the ocean
(b) the confirmation of the repeated investment Earth's magnetic field in the geologic past
(c) the occurrence of the hypothesis of the spread of the seabed and the associated exploitation of oceanic crust
(d) Documentation showing that the earthquake is concentrated in the world and the volcanic activity on oceanic trenches and submarine ridges