What are the two main types of cell transport?

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.

In dna, only the_ varies from one nucleotide to another. base phosphate sugar amino acid

The process by which natural forces move weathered rock and soil brim one place to another is called