Light is classified as because electrical and magnetic fields vibrate in a light wave. fill in the blank

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

How many atoms are there in 5.70 mol of mg

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.