If such activity required a sports energy bar, so be it.

This activity will require approximately 2-3 hours for students to complete.

Talks are then a special and different activity, requiring practice to master.

The activities you suggest require a minimum stay of 42 hours, and usually it's closer to 48.

This activity, and the maintenance of those houses, required a large labor force.

Does the activity require co-operative group work of one kind or another?

Physical activity often requires you to push your body to its limits - but not to the point of pain.

That is, their activities didn't require the copyright owner's authority.

This fund is used to account for general operations and activities not requiring the use of other funds.

All these activities require devoting additional time, effort and thought to another person's needs instead of one's own.