Answer:
K
Explanation:
Potassium is a Period 4 Representative element, and is actually the first element of period 4.
The chemical process is called metabolism.
Answer:
Rocks that undergo a change to form a new rock are referred to as metamorphic rocks. ... Sedimentary rocks were originally sediments, which were compacted under high pressure. Igneous rocks formed when liquid magma or lava—magma that has emerged onto the surface of the Earth—cooled and hardened
Answer:
I think the best answer would be coal