D. Ecosystems
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A simile is when as or like is used to compare two unalike things.
Personification is giving something not human, human characteristics.
Irony is calling a big dog tiny.
D
D
A
B
C
I am not 100% sure these are correct. You can always ask your teacher for a redo though.
Your answer would be B. until and then both show evidence of time. Hope this helps!