B. is the answer because the nervous system send nerves down your body telling your hand to move its a reaction to the pain of the hotness your felling
Answer: To show how different members of a species are related.
The answer is False.
Although, there are some evidence that suggests that species from million years ago possessed both gills and lungs. For example is the Acanthostega Gunnari, one of the oldest species discovered with four limbs. The creature is a salamander-like creature found in Greenland hundreds of million years ago. Although the specie can walk on land but the finding characterized the creature primarily as a fish.