Looking for the definition of RT-PCR? Find out what is the full meaning of RT-PCR on Abbreviations.com! 'Reverse Transcription Polymerase Chain Reaction' is one option -- get in to view more @ The Web's largest and most authoritative acronyms and abbreviations resource.
In short, the rock cycle is the name for the processes that forms and recycles the different types or rocks on our planet. Rocks begin the cycle as igneous rocks, erode into sedimentary rocks then change into metamorphic rocks, finally the rocks melt back to magma and start the process again.
The diagram above shows you how the rocks on Earth have been changed continually over time from one rock type to another. This changing of rock types is called the Rock Cycle. Solid rock can be changed into a new rock by stresses that cause an increase in heat and pressure.