Question: What are by far the most abundant biological entities on Earth and outnumber all the others put together?
About the article "Virus", section "Host range".

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Viruses are by far the most abundant biological entities on Earth and they outnumber all the others put together.
They infect all types of cellular life including animals, plants, bacteria and fungi.
However, different types of viruses can infect only a limited range of hosts and many are species-specific.
Some, such as smallpox virus for example, can infect only one species – in this case humans, and are said to have a narrow host range.
Other viruses, such as rabies virus, can infect different species of mammals and are said to have a broad range.
The viruses that infect plants are harmless to animals, and most viruses that infect other animals are harmless to humans.
The host range of some bacteriophages is limited to a single strain of bacteria and they can be used to trace the source of outbreaks of infections by a method called phage typing.
Almost all oviraptorids come from desert deposits of the Gobi Desert.
Even in the late Cretaceous period, much of this area was desert, or at least very dry, habitat.
In many of the localities where they are found, oviraptorids are among the most abundant dinosaurs present, second only to ankylosaurs and protoceratopsids.
This is consistent with the idea that they were primarily herbivores, which tend to far outnumber carnivores in a given environment.
Oviraptorids appear to have been far more abundant in arid habitats dominated mainly by small dinosaurs (such as those preserved in the Barun Goyot and Djadochta Formations) than in wetter ecosystems where large dinosaurs are common (such as the Nemegt Formation).
The same pattern holds true for protoceratopsids, indicating that both groups preferred dry, desert-like habitat, and fed mainly on the types of tough, low-growing plant life that grows in arid climates. 
"E. huxleyi" is by far the most abundant coccolithophore found in the Earth's oceans, and is considered ubiquitous, occurring everywhere except the polar regions.
During massive blooms (which can cover over 100,000 square kilometers), EHUX cell concentrations can outnumber those of all other species in the region combined, accounting for 75% or more of the total number of photosynthetic plankton in the area.
EHUX blooms regionally act as an important source of calcium carbonate and dimethyl sulfide, the massive production of which can have a significant impact not only on the properties of the surface mixed layer, but also on global climate.
The blooms can be identified through satellite imagery because of the large amount of light back-scattered from the water column, which provides a method to assess their biogeochemical importance on both basin and global scales.
These blooms are prevalent in the Norwegian fjords, causing satellites to pick up "white waters", which describes the reflectance of the blooms picked up by satellites.
This is due to the mass of coccoliths reflecting the incoming sunlight back out of the water, allowing the extent of EHUX blooms to be distinguished in fine detail.
Extensive "E. huxleyi" blooms can have a visible impact on sea albedo.
While multiple scattering can increase light path per unit depth, increasing absorption and solar heating of the water column, EHUX has inspired proposals for geomimesis, because micron-sized air bubbles are specular reflectors, and so in contrast to "E. huxleyi", tend to lower the temperature of the upper water column.
As with self-shading within water-whitening coccolithophore plankton blooms, this may reduce photosynthetic productivity by altering the geometry of the euphotic zone.
Both experiments and modeling are needed to quantify the potential biological impact of such effects, and the corollary potential of reflective blooms of other organisms to increase or reduce evaporation and methane evolution by altering fresh water temperatures. 
Liquid is one of the four fundamental states of matter (the others being solid, gas, and plasma), and is the only state with a definite volume but no fixed shape.
A liquid is made up of tiny vibrating particles of matter, such as atoms, held together by intermolecular bonds.
Water is, by far, the most common liquid on Earth.
Like a gas, a liquid is able to flow and take the shape of a container.
Some liquids resist compression, while others can be compressed.
Unlike a gas, a liquid does not disperse to fill every space of a container, and maintains a fairly constant density.
A distinctive property of the liquid state is surface tension, leading to wetting phenomena.
The density of a liquid is usually close to that of a solid, and much higher than in a gas.
Therefore, liquid and solid are both termed condensed matter.
On the other hand, as liquids and gases share the ability to flow, they are both called fluids.
Although liquid water is abundant on Earth, this state of matter is actually the least common in the known universe, because liquids require a relatively narrow temperature/pressure range to exist.
Most known matter in the universe is in gaseous form (with traces of detectable solid matter) as interstellar clouds or in plasma form within stars. 
In Egypt, sugar cane juice is called "aseer asab" (Egyptian Arabic: عصير قصب) and is by far the most popular drink served by almost all fruit juice vendors, who are abundant in most cities.