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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Answer:
Influential point and Facts.
Explanation:
An influential point is represented in a graph as some sort of changing point since it indicates how "a constant" changes its course or regression line at a specific point.
A low blood pressure cannot be immediately associated with just going to the church, but it can be associated analyzing the psyche impact on people who go to church may feel. Vast more reasons should be taken into consideration, such as why do people go to church? and how do they feel every time they go to a church?
A sort of sensation of relaxation and peace can be achieved by those who practice religious rites that connect deep within people's beliefs giving them a state of calmness, which could have an effect on their blood pressure.
Answer:
The Rule of law is the durable law of a system that includes the mechanism, and process that supports the equality of all people before the law that helps to secures government and prevents the arbitrary use of power.
It is the law based on the principle that all individuals are equal to the law. The rule follows from the idea that truth and based on basic principles that can not act as on his wiil.
Answer:
Elias Howe Jr. was an American inventor best known for his creation of the modern lockstitch sewing machine. This invetion was in 1846. The very first lockstitch sewing machine in the world. His invention helped the mass production of sewing machines and clothing. That in turn revolutionized the sewing industry and freed women from some of the drudgery of daily life at the time. Contrary to popular belief, Howe was not the first to conceive of the idea of a sewing machine. Many other people formulated the idea of such a machine before him, one as early as 1790, and some had even patented their designs and produced working machines, in one case, at least 80 of them.
It was Howe, however, who came up with significant refinements to the design concepts of his predecessors, and on September 10, 1846, he was awarded the first U.S. Patent (4,750) for a sewing machine using a lockstitch design. His machine contained the three essential features common in most modern machines: a needle with the eye at the point; a shuttle operating beneath the cloth to form the lock stitch; and an automatic feed.
Howe's design demonstrated the novel idea of a needle that carried the thread forward, through a piece of material, where another thread, held in a metal shuttle, passed through a loop in the middle thread (caused by the needle moving forward then suddenly backward). The needle was then retracted and this action pulled the two threads to lock them in the fabric. This is how the lockstitch was born.
The sewing machine is easier to use and also you can repair worn, torn or unused clothes by yourself. You can re-design your old clothing. You can even become a fashion trend-setter by making clothes in your own style. Having a sewing machine will save you from going to a tailor, thus helping you to save money.
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