I think the answer is B. Correct me if i'm wrong :)
That is metalic bonding.
That bonding is formed between the delocalized valence electrons in a metal and the ions of the metal (which are positive).
The delocalized electrons can move freely among the set of orbitals of neighbors atoms which is a characteristic of the metals.
Mostly water erosion. Snow melts at the top of mountains and trickles down a mountainside. This loosens and erodes rocks, leading to unstable stones.
Are you asking for all of the questions? Or just a specific one?
Answer:
1.Respiration of animals and plants.
2.The burning of fossil fuels.
3.Bacteria decompose corpses.
