# biology

1. Owls sleep during the day and are awake at night because of their kind of
estivation
habituation*
conditioning

2. When a bird sings to signal others of the same species to keep away, it is showing signs of
cheerfulness
courtship behavior
conditioning
aggression*

I put * next to what I put as my answer.

1. 👍
2. 👎
3. 👁

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