Question

Features of birds are- I: Their body shapes II: Smooth waxy feathers III: Hollow bones IV: Beaks Which are flight adaptations?


Only I and II

Only III and IV

Only I, II and III

I, II, III and IV​

Answer 1

Answer:

I, II, III and IV​

Answer 2

Answer:

Only I,II and III

Explanation:

the beaks don't hewlp in flying