The phrase "bulk of activities" is grammatically correct and can be used in written English.
It is typically used to refer to the majority or main part of a series of activities. Example: The bulk of the activities at the summer camp included swimming, hiking, and arts and crafts.
In the voltage-sensitive dye recordings mentioned above [ 14], the SPV was not detectably activated, suggesting that the bulk of activity 'fades' in the proximal neurites before it reaches the cell bodies.
Women.com: Women are responsible for the bulk of activity on many of the most popular social sites on the Internet, from Facebook to Pinterest.
As can be seen in Fig. 5, the bulk of activity is contralateral for left and right attentional shifts.
The bulk of its activities are focused on contraception, STI screening, and cancer screening, and it places a particular emphasis on providing reproductive health care to people who otherwise wouldn't have access.
The umbrella group the Welsh Sports Association said most governing bodies delivered the bulk of their activities through their clubs which were predominantly run by volunteers.
Council Directive 95/26/EC of 29 June 1995 says that banks must have their head offices "in the same member state as its registered office" and that those head offices should be located where a group has the bulk of its activities.
But the bulk of its activities continue to involve the indiscriminate killing of millions of native animals, negatively impacting ecosystems across the country with little scientific support that the killing even has the intended benefits for the agricultural interests on whose behalf it is carried out.
The bulk of the activities of the Priory of Sion, however, bore no resemblance to the objectives as outlined in its statutes: Circuit, the official journal of the Priory of Sion, was indicated as a news bulletin of an "organisation for the defence of the rights and the freedom of affordable housing" rather than for the promotion of chivalry-inspired charitable work.
