The phrase "activities on which" is correct and usable in written English.
It can be used when referring to specific activities that are the focus of discussion or analysis.
Example: "The report highlights the activities on which the success of the project depends."
Alternatives: "activities that" or "activities in which".
"Ex Libris" may be his clearest, most explicit exposition of the principles and activities on which this ideal depends.
Yet if the whole house of cards is going to tumble once more, there are plenty of other doomed activities on which you can set your sights.
The qualitative importance of legislation is illustrated by the appraisal that society is not engaged in any activities on which legislation has no effect, at least indirectly.
There are several important activities on which to focus at every stage of your startup's development—from early conceptualization through launching and scaling.
In "Neighbors," as in "Neighbors 2," Stoller allows situations to get out of hand; in movies that are constructed as slight comic exaggerations of ordinary practicalities, he stages big and noisy comic set pieces that are as grotesquely implausible as they are unsupported by the practical activities on which they'd depend.
Jordan's King Abdullah has sometimes let Brotherhood members sit in cabinet and at other times moved against them, occasionally by squashing the vital social and charitable activities on which much of their popularity rests.Another problem for the Islamists is that they, too, are prey to troubling ideological doubts.
It is not possible to simply eradicate logging, as it is a crucial economic activity on which many people depend.
Well, it's funny you should say that, because skiing is not the activity on which Heather Mills's reputation has traditionally been based.
The work at the Central Middlesex involved new areas of concern such as coronary heart disease and physical activity, on which seminal papers were published in the 1950s, together with a focus on infant mortality.
The work at the Central Middlesex involved new areas of concern such as coronary heart disease and physical activity, on which seminal papers were published in the 1950s, together with a focus on infant mortality.
I can't think of anything more meaningful for me to spend my time on than to improve the activity on which people spend the majority of their waking lives, and that is work!
