Answer:
O metamorphism
Step-by-step explanation:
The term that appropriately describes the conversion of element carbon to minerals diamond and graphite is metamorphism.
Metamorphism is the process of changing the minerals and textures of rocks under pressure and temperature conditions without melting the prolith.
- Graphite and diamond are metamorphic rocks.
- They are formed by subjecting element carbon to different conditions of pressure and temperature.
- Graphite forms under low to medium pressure metamorphic conditions.
- Diamond forms under high grade metamorphism.
- Since most of these conditions are not near surface in nature, diamond are not so abundant on earth.