Most activity occurs during the morning hours or in the late afternoon and early evening.

All this activity from beginning to main strike occurs just in a second.

This is unusual, as activity never occurs during the day.

Such activities occur naturally where adults value reading and writing.

The initial activities for establishing the university occurred at the beginning of 1949.

The text then continues with whatever activity occurred on that date.

If any sexual activity occurred, she said, it was without her knowledge and authorization.

Almost all academic activities, such as research and tutoring, occur at a university level.

Some of the rocks have ages starting from 24.9 to 22.1 million years ago, but much more recent activity has occurred.

The first volcanic activity likely occurred about 25,000 years ago, but it could also be significantly older.