Water forms according to the equation below: How much energy is released during the formation of 1 mol H2O(g)?

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

When the speed of the bottle is 2 m/s, the average maximum height of the beanbag is m.

Which fact represents evidence for the big bang theory?