There is a certain chemical logic to the steps of the citric acid cycle. One particular functional group plays a large role in facilitating most of the chemistry that goes on in the reactions. This group is electron withdrawing, which helps to stabilize carbanion intermediates and increase the reactivity of the methyl group of acetyl CoA. What is this functional group

Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic