Question

Will fan and medal for help!

Answer 1

1. Explain how an interlocking schedule at a Puerto Rican school works. Why are interlocking schedules used?

2. Why is it not always necessary to include a subject pronoun before the verb in Spanish?

3. What is the heritage of many of the students at Miami High School? Explain why so many students of this heritage are at Miami High School.

4. How do researchers know that Tiahuanaco was an advanced civilization?

Answer 2

For 1,3, and 4 you need to watch the videos embedded in the lesson since the answers are stated pretty simply in there.
As for number 2. the pronouns aren't always needed because of the conjugation of the verb.

Answer 3

There weren't any videos.