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Many birds live in mountainous temperate forest ecosystems. Above the tree line on mountains, however, the ecosystems change. Few birds are found there. Many factors contribute to the lower number of birds seen above a mountain’s tree line. Which of these factors is abiotic? _________________________________

(limited food, frequent high winds, high flying predators, no trees for shelter)

1 Answer

3 votes
im pretty sure it’s no trees for shelter!
User Samrat Patil
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