The phrase "the phenomenon appears" is a grammatically correct and usable sentence in written English.
You can use it to describe a situation in which something that has been anticipated or predicted comes to be realized. For example, "Many scientists predicted that a new species of plant would appear in this region, and the phenomenon appears to have occurred."
But the phenomenon appears to be growing in size and intensity.
The phenomenon appears above a threshold of lattice mismatch (≈2%) between the film and substrate.
The phenomenon appears to play a role in fighting viral infections and also may be involved in the molecular changes that cause cells to become cancerous.
The phenomenon appears limited to an elite few — a trickle in comparison to the influx of people who arrive in Delhi every day in search of economic opportunity.
The phenomenon appears similar to the oxygen effects observed by others in cyclic loading and also to the dynamic embrittlement observed in other materials and environments.
The phenomenon appears to be entirely physical and independent of the chemical nature of the polymer, since similar results are obtained with polyacrylamide, polydimethylacrylamide, and poly ethylene oxide).
The first hints of the phenomenon appeared back in 1990, but at the time, researchers didn't connect what they had observed with RNA.
The phenomenon appeared in the US around mid-July 2014 and started gathering pace in the UK a few weeks ago when Macmillan Cancer Support retweeted an #icebucketchallenge video by one of their supporter's videos on 4 August 2014.
The concentration of living things was particularly high in woodland, but the phenomenon appeared in every type of landscape sampled except arable land, probably because of the regular tilling and disruption of their habitat.
The ghostly glow later became known as "foxfire", probably from the Old French word fois meaning "false", and the phenomenon appeared in many works of literature, including The Adventures of Huckleberry Finn when Tom Sawyer used it to light up a tunnel.
The research team, whose latest research on the phenomenon appeared in the scientific journal PLoS ONE in mid-March, was astounded by the fact that the collective heat generated by the group, while fatal for the hornet, leaves the bees unaffected.
