A way of learning that happens through rewards and punishments for behavior. An association is created between a behavior and a consequence for that behavior.
Answer : true
Explanation: the first choice is A
Answer:
The answer is C. retropharyngeal abscess.
Explanation:
A 2 and a half year old patient with severe sore throat, aphonic, pain and difficulty to open and close the mouth and who on physical examination presents markedly erythematous oropharynx without exudate. The soft tissue radiograph of the neck gives us the diagnostic impression that it is a retropharyngeal abscess. Very common in children under 5 years of age.
However, when necessary, such as during exercise, your heart can pump up to four times that amount per minute". In the long term, maintaining good physical fitness will help to lower your resting heart rate by improving your heart's ability to pump blood around the body more efficiently.