A student is asked to identify an element that is pale yellow brittle solid and does not conduct electricity

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 best describes why nh4+ can form an ionic bond with ci-?

‘which reaction would most likely require the use of an inert electrode?