(( earth science ))
the motion of tectonic plates is part of a larger system that includes

a.
the mantle expanding, due to heat and pressure

b.
the mantle becoming more massive and dense, due to gravity

c.
convection currents of ocean waters

d.
convection currents in the mantle

1. when the tempature rises,your sweat glands and then springs into action making perspiration. some sweat evaporates with your skin taling heat with it.2.some of the blood pumped by the heart travels by your lungs to get rid of carbon dioxide and pick up oxygen.3.saliva produces by, you drinking water which saliva is 98% of. when mucus builds up in your body it also creates saliva as well as, antibacterial compunds.4.when the core body tempature drops, the shivering reflex is triggered to maintain homeostasis. for example: when you get out the pool you start to shiver because it is cold.