Answer:
Explanation:
If the differences in the time of arrival of each wave is measured, the distance can be calculated. The more the difference in their time of arrival, the more the distance and this distance can be in any direction. If distance is used as the radius on the circle that will mean that the disturbance must have taken place on the circle.
If you place a telephone call to two people with similar measurements about this same event at different places, then their circles can be transfered to your own map, the point of intersection of this 3 circles is the location of disturbance.
In this question, there are no options provided. I would try and answer this question from my knowledge and hope it helps you. High erosion rates in Madagascar are caused primarily by slash and burn treatment of forests. This leads to the upper soil becoming very loose and they get eroded very easily. This leads to unfavorable condition for farming.
Explanation:
hydrogen, oxygen and fluorine
Relic Boundary is the correct answer :)