B) cold to hot hope this helps
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 expected reference range when obtaining oxygen
saturation level is 95%-100%.
The four reasons as to why the reference range may be lower
is due to the following;
-
Pulmonary edema
-
Person with history of COPD
-
Asthma and Emphysema
-
Pneumonia
Because their bodies tell them that they need more oxygen and so breathe faster, and try and get the oxygen their body requires and depends on.
Where’s the article?
I can’t tell what it’s about from the answers
