Is Algae considered a heterotroph or an autotroph? ​

Which entry is in the wrong position in the table?

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.