Question

bears can survive each winter in this state without performing these essential body functions! the bear in the images below is named beadnose and lives in alaska. you can see how her body changes as she gets ready for hibernation.
this is bear #409, nicknamed \beadnose\, from katmai national park in alaska. both photographs are of the same bear, taken on june 29th and september 30th.
what evidence from the table supports the claim that beadnose takes in and uses less oxygen when she is hibernating? (choose the two best responses)
a during hibernation, a bear’s body weight decreases by an average of 200 lbs. if beadnose didn’t use less oxygen, she would lose even more weight and not survive through hibernation.
b during hibernation, a bear’s body fat percentage decreases to half of its value from the fall. as her body fat decreases, beadnose needs less oxygen to survive.

Explanation:

To determine the correct answer, we analyze each option:

• Option A: The statement about losing more weight and not surviving is incorrect as the text doesn't suggest Beadnose wouldn't survive, and the weight loss claim isn't supported.
• Option B: The text mentions that as body fat decreases (from the fall, preparing for hibernation), Beadnose needs less oxygen to survive. This aligns with the claim that she uses less oxygen during hibernation, as body fat decrease is part of hibernation preparation/process.

Answer:

B. During hibernation, a bear’s body fat percentage decreases to half of its value from the fall. As her body fat decreases, Beadnose needs less oxygen to survive.