The phrase "normal phenomena" is correct and can be used in written English.
It refers to events or occurrences that are typical or expected in a certain situation or context. Example: It is normal for storms to occur in this region during the summer months. In fact, heavy rainfall and thunderstorms are common phenomena during this time of year.
In certain conditions, as when looking at a blue sky, almost everybody can perceive them, and they are normal phenomena.
Normal phenomena should ideally be studied in normal individuals.
For example since the 1970s, containerised/unitised cargo and door-to-door (rather than terminal-to-terminal) transport service have become widely accepted, normal phenomena.
A possible explanation for this discrepancy might be the fact that the decrease in bone formation (represented by P1NP) was lagging behind the decrease in bone resorption (represented by CTX), a normal phenomena in the treatment with anti-resorptives.
Lymphangiogenesis is the process of development of lymphatic vessels that occurs both during normal phenomena, e.g., during an inflammation or wound healing, and as part of many pathological processes, including carcinogenesis.
Furthermore, if diagnosis of disease is based exclusively on the presence of specific symptom characteristics, we may risk reinforcing a dualistic approach, including medicalisation of normal phenomena and devaluation of medically unexplained symptoms.
This is a normal phenomenon".
"It's a normal phenomenon for small retailers to be squeezed out by high rents.
This is a normal phenomenon and nothing to do with being addicted to social media.
And in his book "The Idea of Justice," he dwells on the social tendency to see gender disparity as a "normal" phenomenon in India.
Xu Guangyu, a retired major general in the People's Liberation Army and director of the China Arms Control and Disarmament Association, said in an interview that the push by Chinese companies to develop and sell higher-tech arms was "a very normal phenomenon".
