Examlex
Chlorofluorocarbons and halons destroy ozone in the stratosphere.
Sleeping Aggregations
The behavior of certain species to cluster together when resting or sleeping, often for warmth, protection, or social reasons.
Optimal Foraging Hypothesis
A theory suggesting that animals maximize their net energy intake per unit of time spent foraging.
Hummingbird
A small bird known for its ability to hover in mid-air thanks to rapid wing flapping, feeding primarily on nectar and playing a role in pollination.
Nectar
A sweet liquid produced by plants, which serves as a food source for pollinators such as bees and butterflies.
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