The phrase "are constantly present in" is correct and usable in written English.
It can be used to describe something that is always found or exists within a particular context or environment.
Example: "Emotions are constantly present in our daily interactions, influencing our decisions and behaviors."
Alternatives: "are always found in" or "are ever-present in".
Both this influence and her own life story are constantly present in her works—from Elleve aar (1934; Eleven Years), in which she tells of her childhood, to the story of her flight from Nazi-occupied Norway, published originally in English as Return to the Future (1942; Norwegian Tillbake til fremtiden).
Activation of the renin angiotensin system (RAS), renal oxidative stress and inflammation are constantly present in experimental hypertension.
Ever since 1859, when Charles Darwin published On the Origin of Species by Means of Natural Selection, or the Preservation of Favored Races in the Struggle for Life, we have learned that the survival of species is dependent on how well a species adapts, or evolves to handle all the threats to life that are constantly present in their environment.
Many PAMPs (and DAMPs) are constantly present in humans.
Although skeletal muscle atrophy and other related changes are constantly present in aging, mechanisms affecting the regenerative potential of satellite cells are only partially clarified.
Since both sAPPβ and sAPPα are constantly present in the ECM in dynamically changing ratios, we predict that sAPPβ could act as an antagonist of sAPPα/APP (shown in Figure 2 as competitive inhibition (line 1)), with the potential to modulate various interactions between APP and sAPPα and the ECM.
It is the very contradiction between what is and what might be that allows us to overstep the boundaries with which we are constantly presented in order to create our endpoint, rather than simply sleepwalk towards it.
Saliva, a thick, colourless, opalescent fluid that is constantly present in the mouth of humans and other vertebrates.
The contrast between tiny New York apartments and her upbringing in spacious California is constantly present in the novel, as is the question of what "home" means.
Canonic and variation forms were also outcomes of a quest for integration, for creating music in which a motif of three or four notes would be constantly present in different colorings, registrations and rhythmic placements.
Jaish al-Nasr, a group affiliated to the Free Syrian Army FSAA) which has backed the truce, said government forces had fired mortars, rockets and machine guns in Hama province and that warplanes had been constantly present in the sky.
