Respuesta :
The theme that in a trillion trees is the need to protect the environment and the ecosystem.
What is a theme?
It should be noted that a theme simply means the main idea that's contained in a literary work.
In this case, the theme that can be found in a trillion trees is simply about the need to protect the environment and the ecosystem.
Learn more about theme on:
https://brainly.com/question/11600913
