Answer:
True there is only one verb that changes from u to ue
Answer: This is incorrect
Explanation:
había tres pájaros en un árbol
Soy (yo form, present tense) - use when describing traits about yourself (permanent traits, not thoughts/feelings/locations/etc)
Era (yo/el/ella/usted form, past tense) - directly translates to 'was.' use when describing something in the past
