Billiards (to require) __________ a high degree of precision and mental focus to master the various techniques and strategies involved.

Wolves (to play) __________ a critical role in maintaining the balance of ecosystems by regulating populations of prey species.

Teeth (to be) __________ cleaned regularly by the dentist to maintain oral hygiene.

Oxen (to be) __________ employed in many rural areas where mechanized equipment has yet to replace manual labor.

Data (to support) __________ the hypothesis that early intervention can significantly improve outcomes for at-risk populations.

The intricacies of modern political systems (to affect) __________ not only the policies of a nation but also the attitudes and behaviors of its citizens.

Cactus (to thrive) __________ in arid environments, where its unique adaptations allow it to conserve water and survive extreme heat.

A variety of phenomena related to climate change (to arise) __________ from both natural processes and human activity.

Civics (to be) __________ crucial for students who wish to participate effectively in a democratic society and understand the dynamics of governance.

The occurrence of a financial or humanitarian crisis in a nation or region (to demand) __________ immediate and decisive action.