You are hiking in the wood and you get bit by a snake. your heart rate increases. which neurotransmitter is released at your heart to increase the rate of muscle contraction? A. norepinephrine
B. acetylcholine
C. both norepinephrine and acetylcholine
D. not eniugh information is given to answer

relative humidity, temperature and dew point -- are bound together in the mathematical relationship below. relative humidity changes when temperatures change. because warm air can hold more water vapor than cool air, relative humidity falls when the temperature rises if no moisture is added to the air. so i would say a

the answer you are looking for is the united states forest service.

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