Boris Johnson and Rishi Sunak meet with students at London school

The video tutorial begins with an introduction and setting objectives for the session. It briefly discusses concepts of exile and distribution, followed by setting up lab partners and experiment details. The discussion then moves to stomata and table setup for experiments. A light-hearted segment on mask usage and a coffee break is included. Finally, the video addresses external factors affecting students and exam preparation.

What challenges does the speaker mention regarding drinking while wearing a mask?

What external factors does the speaker refer to that affect their situation?