Question

5. The part of the teeth that Weddell seal can use to dig breathing
holes in the ice:​

Answer 1

Answer:

There are many cracks in the ice during the warmer summer months. During winter these openings freeze over and Weddell seals use their canine and incisor teeth to rasp open the new ice and so maintain holes through which to breathe.

Explanation:

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Answer 2

Answer:

If natural openings are not available, Weddell seals use their teeth to open and maintain air holes in the ice pack.

they are incisors ( part of the teeth that Weddell seal can use to dig breathing)