What does the addition of a catalyst do to a reaction? it provides a reaction mechanism with a lower activation energy and a slower reaction rate. it provides a reaction mechanism with a lower activation energy and faster reaction rate. it provides a reaction mechanism with a higher activation energy and slower reaction rate. it provides a reaction mechanism with a higher activation energy and faster reaction rate.

One or more substances changing into one or more substances is an example of a

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 is most likely true about water in chemical solutions?