Answer:
B. Root is the correct answer
Transpulmonary pressure, the difference between intrapulmonary and intrapleural pressures, prevents the lungs from collapsing
Answer:
Fact: a set of data or observations that have been shown to be accurate through multiple trials.
Hypothesis: a proposed explanation for an occurrence based on available data, observations, or evidence
Law: a well-supported explanation of all the evidence related to a natural phenomenon
Theory: a description of a natural phenomenon that is always observed to occur under specific conditions
hope this helps :) :D <3
Sweating (to try to remain cool) and increased heart rate (to help deliver oxygen to muscles faster)