The phrase "an overwhelming activity" is correct and usable in written English.
It can be used to describe an activity that is intense, demanding, or difficult to manage due to its scale or complexity.
Example: "The event turned into an overwhelming activity, requiring all hands on deck to ensure everything ran smoothly."
Alternatives: "a daunting task" or "a taxing endeavor."
The study finds that while children of migrants are able to join academic organizations and extra-curricular activities, an overwhelming majority of these children are not protected against economic shocks.
He added: "China still has a government that plays an overwhelming role in determining economic activity.
There's an immediacy about the way in which this performance by Mark Knoop and Roderick Chadwick, with Newton Armstrong controlling the electronics, has been recorded; every nuance and colour in Stockhausen's piano writing is caught, and the work's coda, which compresses everything that's been heard before into two minutes' frantic activity, becomes an overwhelming climax.
In fact, there is an overwhelming scientific consensus that human activity -- the burning of fossil fuels -- is rapidly causing climate change, and that climate change leads to extreme weather events.
This is accompanied by a reduction in the pro-inflammatory mediators IL-1β, IL-6 and TNF-α, as well as a decrease in NF-kB binding activity, thereby inhibiting an overwhelming inflammation response to sepsis.
These results clearly demonstrate that the 3D interconnected mesopores structure plays an overwhelming role to the increments of activities.
Developing an IS to support complex cross-border DM activities, however, is an overwhelming task even for most capable government authorities for a number of reasons.
There was an overwhelming preponderance of tumours in patients <16 years without kinase activity compared with those with some residual activity, consistent with a substantial protective effect of residual ATM kinase activity against tumour development in childhood.
We noted an overwhelming participation and interest from local women in the activities of the ICC.
There is an overwhelming scientific consensus that climate change is caused by human activity.
