iBT TOEFL Topic Vocabulary Breakthrough Unit 080

iBT TOEFL Topic Vocabulary Breakthrough Unit 080
Author: Li Xiaolai

80. For breeding, most birds build nests, which help them to incubate, or warm, the developing eggs. Nests sometimes offer camouflage from predators and physical protection from the elements. Nests may be elaborate constructions or a mere scrape on the ground.

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