What is anaerobic respiration?
a. the process cells use to release energy from glucose when
oxygen is not available
b. physical activity that increases heart and breathing rates
c. physical activity that decreases heart and breathing rates
d. the process cells use to release energy from glucose in the
presence of oxygen

Subduction zones form when an oceanic plate collides with another oceanic plate or continental plate. the continental crust is lighter and less dense than oceanic crust. continental crust's density is approximately 2.7 grams per cubic centimeter. oceanic crust is thinner and the average density is about 3.3 cubic centimeters. when the two crustal plates converge the oceanic plate always bends and subducts beneath a continental plate. once the oceanic crust subjects, the rocks are subjected to changes in heat and pressure. because of this, we would expect to find rocks in the area of a subduction. a) clastic b) igneous c) metamorphic d) sedimentary