The phrase "activities grow" is correct and usable in written English.
It can be used to describe the increase or expansion of various activities over time or in a specific context.
Example: "As the community became more engaged, the number of activities grow, providing more opportunities for residents to connect."
Alternatives: "activities expand" or "activities increase".
Meanwhile, the technologies for monitoring and analyzing those activities grow more powerful.
"A Latin American pope can do a lot to make our activities grow in the region, at least that's what I hope".
"[T]he technologies of internet repression, monitoring and control continue to advance and spread as the tools that oppressive governments use to restrict internet access and to track citizen online activities grow more sophisticated.
But, in fact, all these activities grow organically from a particularly French understanding of the business that Générale and Lyonnaise are in and of the special skills that they possess.
The analysis shows that during El Nino episodes, tropical cyclone activities grow significantly stronger in the south latitude 20 ^circ )N, particularly in the east longitude 130 ^circ )E.
This evidence ties in with Wagner's law of increasing state activity (Bird 1971), which states that government activities grow with the economic development of a country over time, through increasing public expenditure to satisfy social needs.
Export activities grew from the 1930s onward.
And education-oriented activities grew the fastest.
The area's heavy industry declined during the late 20th century, and light industry and service activities grew in economic importance.
A6 As evidence of militant Islamic activities grows in the Netherlands, prosecutors there charged eight men with helping to recruit, house and finance fighters for Al Qaeda.
There have been lengthy magazine articles investigating its activities, growing protests and a legion of bloggers scouring the company's every move.
