11. On the heart diagram, what does letter D represent? *

the letter C and D represents chambers of heart

Explanation:

D represents right ventricle

a mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. this uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.a geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged.

italy:

classic, nostalgic, romantic and beautiful. no place better than italy or sicily.