Answer;
A. Money is a medium of exchange.
Explanation;
Money actually serves several different key functions in our economy. It is a medium of exchange, a unit of account, and a store of value.
D. All of the above statements are true. Money is a medium of exchange, a unit of account, and a store of value.
Money is a medium of exchange because it is used to buy goods and services. It is also a unit of account because prices and values are expressed in terms of money. Lastly, money serves as a store of value, allowing individuals to save and accumulate wealth over time. Money serves various essential functions in modern economies. It is a medium of exchange, facilitating the buying and selling of goods and services.
Money also acts as a unit of account, providing a common measure of value for comparing prices. Additionally, it serves as a store of value, allowing individuals to save and transfer purchasing power over time. Money enables economic efficiency, trade, investment, and financial transactions, making it a cornerstone of economic systems.
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The relationship between the stiffness of a medium and the speed of the wave is directly proportional. Because molecules are closer in a stiff medium, an increase of stiffness in a medium would also result to an increase in which a wave travels.
The state you are referring to is called dynamic equilibrium. In the context of a cell, this means that the concentration of molecules or ions is the same inside and outside the cell,
but particles continue to move across the membrane in both directions at equal rates.
This state is reached when the membrane is selectively permeable and allows for the free diffusion of the particles across the membrane until an equal concentration is reached on both sides.
At dynamic equilibrium, there is no net movement of particles across the membrane, although individual particles continue to move back and forth in both directions.
This is an important concept in cellular physiology, as it allows for the maintenance of homeostasis and proper functioning of the cell.
To know more about dynamic equilibrium refer here
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Answer:
d. aeration
Explanation:
Answer: the correct answer is option d.
Explanation:
Validity is concerned with the extent to which differences in scores reflect true differences in the characteristic.
Answer:
d. concerned with the extent to which differences in scores reflect true differences in the characteristic.
Explanation:
Validity is the level of accuracy of a measurement under research or test. A measurement is said to be valid if its result is closely related to real world values. Validity in research shows how sound one's research is. In data it means getting a true representation of the data a researcher is claiming to measure. To measure validity, the measurement must have internal consistency and good test-retest reliability.
Types of validity.
Validity can be content, construct, face and criterion.