The answer is "Who"
If the word can be replaced by "he" or "she", you use, "who". If it can only be replaced by "him" or "her", you use "whom".
The structure that would suit the text would be<span> compare and contrast structure.
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Answer:
competition predation and diseases
Explanation:
The correct answer would be C. Old and new families would be an adverbial phrase because old and new are adverbs that describe what kind of family there are.
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