Well considering birds follow humane rules, their selection and environment around them being thriving could effect their songs in a positive way. While a bird with a low selection of environmental stuff around them would effect their songs in a bad way giving off a more down manner.
this would be true. if i helped, please give brainliest answer x
They are more related to fish. 1. They both live in water. 2. Both are vertebrates. 3. Both have an internal skeleton.
