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.
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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.
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The first single off of Press to Play was Press which released to mixed critical reviews.
Explanation:
Press to Play is regarded as one of the worst albums of Paul McCartney's career and the single off of the album was titled Press that was released shortly before the albums and hit top 30 on debut.
However, it soon fell off and received bad reviews all across the board and has been an embarrassment for Paul who has come out and acknowledged that it was not the direction to go for him creatively.
The album has remained one of the worst in his discography.
Answer:
air pollution.
Explanation:
Air Pollution: Pollution of air, water and soil take a huge number of years to recover. Industry and engine vehicle fumes are the most obvious toxins. Substantial metals, nitrates and plastic are poisons in charge of pollution. While water contamination is brought about by oil slicks, acid rain, and urban sprawl; air contamination is created by different gasses and poisons discharged by businesses and manufacturing plants and burning of fossil fills; soil contamination is majorly created by mechanical waste that takes supplements out of the soil.
