The phrase "activities are coordinated by" is correct and usable in written English.
It can be used to describe the organization or management of activities by a specific person or group.
Example: "The community events are organized effectively because all activities are coordinated by a dedicated team of volunteers."
Alternatives: "activities are managed by" or "activities are overseen by".
At a more local level, Moldova is administered by elected town and village councils and mayors; their activities are coordinated by district councils, which also are elected.
The money is intended specifically to pay for the activities of the Iraq Survey Group, made up of teams of troops and experts who are managed by the Pentagon but whose activities are coordinated by David Kay, a former United Nations weapons inspector who reports to the director of central intelligence, George J. Tenet.
This function is exercised in the United States by the Board on Geographic Names and in the United Kingdom by the Permanent Committee on Geographical Names; worldwide these activities are coordinated by the United Nations Conference on the Standardization of Geographical Names.
The different activities are coordinated by the Biomassehof Achental GmbH & Co. KG.
Cnidarians' activities are coordinated by a decentralized nerve net and simple receptors.
The fundraising activities are coordinated by the boys and events take place throughout the year to raise money for the selected charity.
The party also had groups operating among the intelligentsia and urban workers and had administrative and "disorganizing" sections; all its activities were coordinated by a central "basic circle".
The reconnaissance activities were coordinated by the 1st Field Survey Company, Royal Engineers.
In New Guinea, logistics and construction activities were coordinated by task force engineer staffs.
That bipartisan criminal investigation examined the funneling millions of dollars among groups whose activities were coordinated by Scott Walker's right-hand man to aid the anti-recall campaign of the governor and several senators.
Activities were coordinated by the emergency operations center established by the Sierra Leone MoHS and WHO.
