¡Hola!
1. El medio ambiente mejora
2. La contaminación ambiental se reduce .
3.
Espero que te sirva
After reading the 2 first paragraph of the memoirs in the “Night”, it could be said that the reader gets the impression that he/she is hearing a cautionary or precocious tale about the dangers of complacency while about to face a great evil.
Answer: "on kids" and "to their stress levels"
Explanation:
A prepositional phrase has a preposition and a prepositional object. It may or may not have modifiers to the object. "On" and "to" are prepositions, and in these phrases "kids" and "levels" are the objects.