Which statement is true about sliver and gold?
a. they are both made of subatomic particles.
b. they both are made only of protons
c. they both make up the water molecule
d. they are both in every living organisms

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.