Answer:
The written version of the speech has a more explanatory and descriptive character, the video version, however, has a more direct impacting, accusatory and challenging character.
Step-by-step explanation:
The written version of the speech has a more explanatory character, explaining how and why adults should be responsible for the environment in which we live and make that environment a more just, balanced and safe place.
In the video version, however, it has a more accusatory and challenging character, where Cullis-Suzuki speaks directly to adults about everything they do and their responsibility to take responsibility for the actions that will shape the future of the world.