Carol and sam were using the microscope in science class. they used a dropper to put some pond water on their microscope slide. this is what they saw. "that is something living," said sam. "i don't think so," said carol. what do you think? explain.

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.