At mid-ocean ridges,
a. the crust is older.
b. sea-floor spreading occurs.
c oceanic lithosphere is destroyed.
d. tectonic plates are colliding

Which nutritional supplement is correctly paired with the health issue it addresses? which nutritional supplement is correctly paired with the health issue it addresses? vitamin c supplementation prevent depression. calcium supplementation increases iq. vitamin e supplementation prevent birth defects. vitamin b12 can vegans maintain health?