Rock can be changed directly into rock with the application of heat and pressure.

Sedimentary , metamorphic

Sedimentary rocks can be transformed into metamorphic rocks through heat and pressure. Metamorphic and igneous rock are made into sedimentary rock through the processes of erosion, weathering, and compaction.

it is called acid bonding

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.