Here, you would need to add the preposition "in."
The sentence should read: My elder sister is really interested in the problems of the environment.
Other prepositions would not make sense and could confuse the reader as to the intended meaning.
Answer:What were women's lives like during the Elizabethan age?
Explanation:
Answer: "pheromones" .
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<u>Note</u>: "Odorless chemicals" that serve as "signals" to members of one's own species are called: <u> pheromones </u><u /> .
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