A zookeeper notices that elephants become restless shortly before an earthquake. The zookeeper forms a hypothesis that, just before an earthquake occurs, an elephant detects a sound that humans are unable to hear. How could this hypothesis be tested?

the higher the current the higher the mag field around it the higher the influence on the compass

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.