<span>Single covalent bonding
Covalent bonding is the type of bonding that takes place when two atoms share a pair of electrons with each other. In order to form a molecule, these two electrons are glued to one or more atoms. One important contribution of non-covalent bonding is the oxygen we breathe. On the other hand, polar covalent bonding happens when a pair of electrons are being shared unequally because one of the atoms spends way too much time with another electrons rather than with the atoms. </span>
Answer: Archaeon.
Explanation:
Archaea are unicellular organisms that make up the third domain of organisms on earth. They were initially classified as bacteria, receiving the name archaebacteria, but this classification is outmoded. As a main characteristic, they have no cell nucleus. They have a rigid cell wall that protects them from the environment and it is composed of S-layers and lack peptidoglycan molecules. In appearance they may be described as having a coccoid morphology and their individual range is from 0.1 μm to over 15 μm in diameter.
Answer:
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Explanation:
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