Either
The overpopulation problem is so dire that selecting some humans to be a food source is a just solution.
Or
There are no reasonable objections to the author's proposal.
Answer:
My soul is on fire
Because of desire,
Explanation:
cause it is explaining what he feels
I'm not sure about the Great Britain and Us conflict but I do know that the Mexican American war was the war for the possession of Texas? That may be a contrast you may include. I hope this helps.
Answer:
Immense
Explanation:
Massive means large or huge and so does immense.