I would say that the brain stem would automatically send a message to the muscular rib cage & your diagphragm to make them work harder.
Hope this helps :))
I believe it's A. Premature Birth (though they all seem pretty believable)
Answer:
Grass
Explanation:
since producer is the first thing in the food chain its grass
changes of state are physical changes. they occur when matters absorb or loses energy. processes in which matter changes between liquid and solid states are freezing and melting period processes and which matter change between liquid and gases states are vaporization, evaporation, and condensation