Question

1. Animals with backbone are called
2. Frog's young one breathes with the help of
3.
4. Temperature of the mammals is always​

Answer 1

Answer:

1. Vertebrates

2. they have gills for breathing

3. warm

Explanation:

hope it helps you

Answer 2

Answer:

1. Vertebrates.

2. Tadpoles breath through gills and absorb dissolved oxygen through their skin.

3. Mammals have constant temperature and always be warm.

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