Answer:
"Ser" means "to be". "Soy" is the first person singular form of "ser", meaning "I am". It is used to describe yourself and a characteristic of yours that does not change-- "alta," meaning "tall."
By saying "Yo soy alta" you are saying "I am tall."
Estar is used to talk about HOW something is, so we use it for conditions, locations, emotions, and actions (temporary states).
Hope it helps! :)
Step-by-step explanation: