<span>Hydrogen fusion generates the energy for proton - proton chains and the carbon nitrogen oxygen cycle. It is the nuclear fusion of 4 protons to form a helium 4 nucleus.</span>
D & e represent the same element
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Rocks that were once swampy sediments or peat beds contain carbon and are black, soft, and fossiliferous<span>.(also known as organic sedimentary rock)
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Answer:
An ionic bond essentially donates an electron to the other atom participating in the bond, while electrons in a covalent bond are shared equally between the atoms. The only pure covalent bonds occur between identical atoms. ... Ionic bonds form between a metal and a nonmetal. Covalent bonds form between two nonmetals.
Explanation:
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It might be physical forces
