Skin surfaces that lack hair contain specialized epithelial cells called which are sensitive to touch

Which supports the idea that birds and butterflies both have wings but they do not have a common ancestor with wings? the wings are analogous structures that evolved differently and do not have a similar internal structure. the wings are homologous structures that evolved differently and do not have a similar internal structure. wings of birds are vestigial structures, but the wing structures of bats are not vestigial. wings of bats are vestigial structures, but the wing structures of birds are not vestigial.

Isotopes of the same element have differ in their

What is responsible for the uneven heating between the poles and the equator on any given day