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Answer</h2>
Nucleus: Protons and Neutrons
Electron Cloud: Electrons
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Explanation</h2>
An atom consists of three subatomic particles i.e Electrons, Protons and neutrons. Protons and neutrons are found inside of the nucleus of an atom whereas electrons are found in the orbits that surround the nucleus of an atom known as electron cloud. In the atom Protons contain positive charge to attract the electrons which contain negative charge and the neutrons contain no electrical charge.
Biome, though some might say ecosystem instead. Biomes are very large ecosystems that cover broad areas.<span>If they specify "one" reef, then they are probably looking for "ecosystem"</span>
The number of oxygen is more in carbohydrates than in fats, usually. For instance, the chemical structure of glucose is C6H12O6 compared with oleic acid which is C18H34O2. Carbohydrates and lipids are biomolecules that contribute to cellular and biological processes. These are important because these are the source of energy, replication and reproduction among cells.
