Share Gold Experience B2 Unit 6 Language Check
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For birds, good eyesight is ______ (ESSENSE) for safe flight, and for spotting food, sometimes from a great _______ (HIGH).
essential / height
Without excellent vision, their ______ (SURVIVE) is threatened.
survival
Eyesight is related to ______ (ENVIRONMENT) factors – snakes for example can ‘see’ heat!
environmental
They know when a ______ (DEAD) predator is close because their eyes tell them!
deadly
