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I'm having a hard time putting my gratitude into words but I hope you know how much I appreciate all of your help. Thank you so much. You have given me the gift of encouragement and hope in a difficult time. I am so grateful for your support.
Answer:
Option D, A new food source outside its range of tolerance
Explanation:
Species gets distributed based on their ability to survive or thrive under a given environmental condition.
Basically, the factors which affect the survival of an species are only responsible for its distribution.
Food source outside the range of tolerance will not affect the survival as species nor will affect its health.
However, other factors such as climate, localized disease and change in food distribution pattern will affect the species distribution.
Hence, option D is correct
The answer is B. The mantra of "Manifest Destiny" expanded the U.S greatly, and with new land comes new settlers.