Maturation is a threat to internal validity stemming from either long-term or short-term physiological changes occurring within the participants that may influence the dependent variable.
<h3>
What are physiological changes?</h3>
Ageing causes physiological changes in all organ systems. Arteriosclerosis develops, blood pressure rises, and cardiac output declines. Lung function is compromised, vital capacity is reduced, and expiratory flow rates are slowed.
Pregnancy causes a number of physiological changes in the mother, such as an increase in fat and total body water, a drop in plasma protein concentrations, particularly albumin, an increase in blood volume, cardiac output, and blood flow to the kidneys, and a decrease in blood pressure.
Learn more about physiological changes here:
brainly.com/question/14970685
#SPJ4
Answer:
no we do not stop it cause its good to us so we know the globe
Answer:
Marco polo was among the first Europeans to describe many of the advance technologies found in China.
Answer: A delegate is someone appointed to represent a group of persons in a politcial raly in the United State of America. To become a delegate at the a democratic National convention first and foremost the candidate must be a registered democrat and win a majority of combined delegats votes at the Democratic National convention.
Pledged delegates are nominated at the state or local level to support a particular candidate at the national convention.
Explanation: