<span>It
provides choices for employment, encourages innovation and competition and
freedom for the individual to choose what the market provides. These advantages also results to low costs, increases
chances for wealth and a variety of goods and services. It also motivates us to
take part in economic activity.</span>
A positive feedback mechanism is the exact opposite of a negative feedback mechanism. ... In a positive feedback system, the output enhances the original stimulus. A good example of a positive feedback system is child birth. During labor, a hormone called oxytocin is released that intensifies and speeds up contractions.
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Answer: C - Snellen
Explanation: A Snellen eye chart is used to measure visual acuity. This chart was developed in 1862 by a Dutch ophthalmologist Herman Snellen.
This chart uses alphanumeric capitals in its 5 by 5 unit grid. An example of the chart is attached.
The Snellen eye chart helps to determine the clarity of one's distance vision and it also helps to determine the legal visual acuity requirement for a valid driver’s license.
Answer:
Rural Free Delivery (RFD), legislation that Watson pushed through Congress in 1893, eliminated the need for individuals living in more remote homesteads to pick up mail, sometimes at distant post offices, or to pay private carriers for delivery.
Explanation:
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