Humans feel hungry when their empty stomachs contract and when glucose levels in the blood drop. Both of these situations stimulate neurons that send messages to the brain which are interpreted as hunger. What body systems are
involved in this process as described?

digestive, muscular, integumentary, and respiratory

digestive, excretory, integumentary, and respiratory

circulatory, excretory, nervous, and skeletal

circulatory, digestive, muscular, and nervous

Answer ! in your opinion, what are the limiting factors that might affect the growth or diversity of our ecosystem? respond to this question in claim, evidence, reasoning format. 1. make your claim (i are the limiting factors that might affect the growth or diversity of our 2. follow the claim with 3 pieces of evidence. evidence may be taken from the reading, the videos, previous lessons, or googled answers. site sources, too. 3. use reasoning to explain why you chose your evidence.