Singular- "earth's" is singular because its showing ownership
plural- "features" is plural because its saying that there is more than one feature of the earth
Bestie the photo isn’t there
mejor amiga, la foto no está ahí
We would need the poem to figure out the tone of it. The tone should reveal her feelings about the poem which should help you figure out the question.
Example:
Sad - Maybe she lost something
Happy - Maybe something good happened