Seismologists inge lehamann studied earthquakes. which layer of earth did she predict to be solid after observing the motion of p waves?
upper mantle
lower mantle
outer core
inner core
select one answer

Inner core  was found to be solid after observing the motion of P waves.

Explanation:

Seismologist Inge Lehmann, studied the seismic waves of an earthquake and discovered about inner core in the mantle layer of Earth. She States that there is a boundary of discontinuity between the outer and inner core of Earth.

She studied the travel of secondary and primary waves during an earthquake and how it flows at different shells of Earth's layer which helped her in finding about the inner core of mantle. She observed that the inner core is a solid layer inside the molten layer of outer core

the answer is d. chordata

the cell cycle is the final answer! : )