Understanding 'ríos' and 'es grave'

O vídeo aborda a importância dos rios e os impactos significativos que eles podem ter no ambiente.

What is the primary focus of the first section?

• Introduction to 'ríos'

• Explanation of 'es grave'

• Summary of the entire video

• Conclusion of the video

Which term is introduced in the first section?

• neither 'ríos' nor 'es grave'

• both 'ríos' and 'es grave'

• ríos

• es grave

What does the second section explain?

• The pronunciation of 'ríos'

• The importance of 'ríos'

• The meaning of 'es grave'

• The history of 'ríos'

Which term is discussed in the second section?

• both 'ríos' and 'es grave'

• ríos

• neither 'ríos' nor 'es grave'

• es grave

What is the duration of the second section?

• 1800 milliseconds

• 2029 milliseconds

• 5830 milliseconds

• 3800 milliseconds