Sound travels faster in solid
Mars is just a fraction the size of the Earth, so it cooled more rapidly. And as it cooled, its molten iron core hardened. As a result, Mars stopped generating its magnetic shield. And, according to one theory, this left its atmosphere to be scoured away by the solar wind.
Phagocytes are the type of cells that 'devour' foreign cells in order to protect the body using phagocytosis.
It refers to Calorific flow
