4. how do you determine if the nanoparticles are alive? (
a. thaw the ice and see if they are mobile
b. thaw the ice and see if they grow and reproduce
c. keep it frozen and run tests to determine more about their chemical composition
d. thaw the ice and expose them to an electrical charge and look for response

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.