Does a continental rift form when shear acts on continental crust

Which type of reaction always has an element and a compound as reactants

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

Which of the following best supports the concept that genetic information is passed on to offspring from both of their parents, not just one?