The sebaceous glands are simple alveolar glands that secrete a substance known as sebum. the secretion of sebum is stimulated

9. the history of life on earth is recorded in

Which of the following graphs have the same wavelengths

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.