Coal
Coal is a sedimentary rock that is made from mostly plant debris. This debris is usually formed in a swampy environment and is usually mined and used for fuel! Hope this helps!
Answer:
Darwin's book introduced the scientific theory that populations evolve over the course of generations through a process of natural selection. It presented a body of evidence that the diversity of life arose by common descent through a branching pattern of evolution.
Metallic bonds result when electrons are shared equally.
Answer:
c) he describes specific locaions for the electrons
Explanation:
he determined that electron are around the nucleus in fixed orbits where as Rutherford did not give any concept of orbits. the concept of orbits also explains the change in energy levels as the electron moves from higher to lower or lower to higher energy level.