Answer:
Oceanic crust and continental crust
A brain surgeon who needs to see which areas of the brain are functioning normally and those that are not would likely rely on <span>fMRI scan.
This abbreviation refers to functional magnetic resonance imaging, and is a technique used to measure brain activity. If some parts of the brain are not active enough, it means there is a problem there which should be fixed as soon as possible.
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Bacteria! Bacteria! Bacteria! :)
<span>Kelp is eaten by sea ottersb
Kelp a large, brown plant that grows in the sea, used in some foods and medicines</span>