I think that its respect.
Mantle rock is the densest in the areas of downwelling. These sections are downwelling due to the fact that they are denser, where they sink to the bottom and reheat, gaining more energy and having a less density rising back up.
Hope this helps! ^^

Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to form pictures of the anatomy and the physiological processes of the body. MRI scanners use strong magnetic fields, magnetic field gradients, and radio waves to generate images of the organs in the body.

:)
___________________________
- ( I would appreciate if you gave brainliest if I helped you, if not please let me know what I got wrong! If you need any more help do not hesitate to ask! :) )
Answer:With this system, blood always flows in only one direction inside the heart. There are also valves at the bottom of the large arteries that carry blood away from the heart: the aorta and the pulmonary artery. These valves keep the blood from flowing backward into the heart once it has been pumped out.
Explanation:
Answer:
The answer is D. The Pacific Plate