What is different about the secondary, tertiary, and quaternary structure of each protein?

Why does the skin of your finger shrink when you wash clothes for a long time?

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water

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.