Wild Soay sheep live in a cold environment on a small Scottish island. The sheep used to be large because they gained extra weight during the summers in order to survive the harsh winters. A recent change in the island's climate has caused grass to be available for a longer period each year, so survival conditions for the sheep have become less challenging. Researchers who study these sheep have most likely observed a decrease in the wild Soay -

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Wild Soay sheep live in a cold environment on a small Scottish island. The sheep used to be large because they gained extra weight during the summers in order to survive the harsh winters. A recent change in the island's climate has caused grass to be available for a longer period each year, so survival conditions for the sheep have become less challenging. Researchers who study these sheep have most likely observed a decrease in the wild Soay -

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sheep's average body size and weight due to the extended availability of food. With less pressure to store extra weight for the winter, the sheep no longer need to be as large to survive. This demonstrates how environmental changes can have a direct impact on the physical characteristics of a species.