Suppose that a brand of gum says on its package "new and improved formula prevent cavities." which of the following is an objective, factual, verifiable claim made by that sentence? a. something about the gum has recently changed. b. the gum prevents cavities. c. the gum is now better than it used to be. d. all of theseanswer is a.

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods.c. it shows that these organisms share the same habitat.d. it provides evidence that these organisms suffered a genetic mutation.