Use 'fall to' when an unplanned responsibility arises, especially in a group context.

Unexpected Duty

'Fall to' can imply a task isn't eagerly accepted but done out of necessity or obligation.

Reluctant Task

Use 'fall to' to express the start of an activity with vigor or enthusiasm.

'Fall to' suggests immersion or getting deeply involved in the next action.

When used in a financial context, 'fall to' denotes a negative change in value.

'Fall to' emphasizes reaching an undesirable or lower point.

'Fall to' can reflect defeat or being overpowered, often in a grave or somber situation.

It's especially poignant in historical or military contexts, indicating loss or death.

'Fall to' can describe how things go from order to disorder or from a better to worse state.

Use it to depict a stark, often sudden change in the state of affairs or condition.