The answer is D the birds and the same bone structure but there beaks changed to eat different food so it can't be a or b and the song is just for mating and they are different species so the answer is D. (D)
Answer:
Brain, Spinal cord & nerves/neurons
Explanation:
N/A
The best answer would be:
Unconditioned stimulus
In Pavlov's experiment on conditioning the food was the unconditioned stimulus that triggers a reflex or natural behavior. Think of it like something that makes you do something automatically.
For example, the food. When the dog smells food, it salivates. This is unconditioned because without teaching the dog, it automatically responds by salivating.
The answer is B.
The mouth is where the food obviously go into your body. Then it travels through ur esophagus into the stomah. chemical reactions happen in the stomach, which then is traveled to the small intestine first to break fats and other things.Then lastly to the large intestines to absorb water from the mass substance to take that useless water to .... let u use the bathroom.
