Practice problem
Respond to the Environment — Characteristics of Life
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Snakes are cold-blooded animals. This means that, to keep their body temperatures stable, they need to warm themselves in the sun. Snakes frequently do this by basking - lying in the sun on warm rocks.
By Tomwsulcer (Own work) [CC0], via Wikimedia Commons
Using the information provided above, determine which stimulus below is most likely to cause a snake to leave its burrow and lie on a rock.