The respiratory system can regulate the pH level of the bâ¦lood by the depth and rate of ventilation. By increasing the rate and depth of ventilation, the respiratory system will decrease the amount of CO2 in the blood which will decrease the amount of carbonic acid in the blood. That will increase the blood pH.
Definition of Adverb: Most often, adverbs modify verbs. When adverbs modify verbs, they describe the verb, much like an adjective modifies or describes a noun. Here are a few adverb examples. David quickly walked.
Learner's definition of ADVERB. [count] : a word that describes a verb, an adjective, another adverb, or a sentence and that is often used to show time, manner, place, or degree. In âarrived early,â âruns slowly,â âstayed home,â and âworks hardâ the words âearly,â âslowly,â âhome,â and âhardâ are adverbs.