3 years ago

Who was the first african american major league baseball player?

Health

1 answer:

Vsevolod [243]3 years ago

6 0

Moses Fleetwood Walker was the first African American major league baseball player.

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A person has cardiovascular disease. The person has narrowed blood vessels. Why are oxygen needs affected?

Katarina [22]

I think that oxygen is needed , because it helps elevate the blood level and help oxygen spread to your brain/ heart.

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3 years ago

The results of a test of visual acuity are 20/15. this individual ________.

Lady_Fox [76]

Given what we know about visual acuity measurements we can confirm that a score of 20/15 will indicate that the patient has better than normal vision.

Visual acuity is most often measured using a chart known as a Snellen chart. The goal of this is to place the patient at a distance of 20 feet and see how many lines in the chart he or she is able to accurately identify. Though this method is becoming less common due to advances in technology, the dual number measurement system drives from these tests.

The numbers in the score indicate the size of the letters and the distance at which the patient can see them. Though 20/20 is considered the optimal normal vision score, a score of 20/15 will actually indicate even better vision. This score indicates that at 20 feet, this individual can see smaller letters than the normal person.