There is no single most useful Zerg unit; any unit can be useful, useless, or somewhere in between.
Where a unit falls is dependent on the current situation. Compare to the game Rock-paper-scissors, where rock is useful against scissors, but useless against paper. Of course the unit relationships are more complicated in the Starcraft games.
For Terran, the ghost is the cloaked unit. For Protoss, the observer and dark templar are cloaked. Zerg has burrowing instead of cloaking, and all zerg units can burrow if the upgrade is purchased.
A Zerg Creep Colony evolves into either a Zerg Sunken Colony or a Zerg Spore Colony.
The unit of measurement most useful for a baseball's weight is ounces.
To have access to the Zerg units, it is really important that you pick "Zerg" as your race.
The "Zerg" are alien creatures that are being controlled by the Overmind, which is Kerrigan.
A Zerg Spire evolves into a Zerg Greater Spire.
If you are referring to the game Starcraft, then the zerg queen is Sarah Kerigan who was transformed by the zerg and has become one of them.she was imprissoned by them and was formed into a zerg queen. she used to be raynors friend. but now she's not
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A zerg is a slang term used in computer gaming for a large group of units or players.
You must get a zerg drone and mutilate it into a building. you can get certain buildinngs to evolve.
According to legend, the great Xel Naga created the Zerg and the Protoss, and it is fated that the Zerg will eventually defeat the protoss while being led by the Hybrids.
The unit of metric measurement most useful for light microscopy is the micrometer (μm), which is one-thousandth of a millimeter. This unit allows for precise measurements of objects that can be visualized under a light microscope.