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In the winter, many northern animals migrate to Florida for better environmental conditions. Which of the following examples provides evidence for this response to the seasonal changes of winter?

1) Physical tags show that northern bears migrate to Florida in response to the seasonal changes of winter to give birth and gain access to food sources.

2) Radio-tracking shows that turkey vultures migrate to Florida in response to the seasonal changes of winter to gather and store food before they hibernate.

3) Through satellite tracking, scientists know that northern birds migrate to Florida in response to the seasonal changes of winter to find warmer temperatures and hibernate.

4)Using satellite tracking, scientists know that whales respond to the seasonal changes of winter by travelling to the warmer waters of Florida to give birth to their calves.