How many milliliters of 2.55 m naoh is needed to make 125 ml of 0.75 m naoh?

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

Nonpoint source pollution is difficult to control because it

What is the approximate vapor pressure when the gas condenses at 70 degrees celsius