Answer:
A.
first line of defense
Explanation:
The first line of defense acts to prevent external substances from entering the body hence sneezing out the pollen acts to expel the pollen from entering his windpipe thus is the first line of defense.
Answer:b)5
Step-by-step explanation:
This table does not describe a linear relationship. This is because the table does not have a constant rate of change; between the first two points, the function changes by
(1/2 - 1/10)/(0--1) = (5/10 - 1/10)/(1) = 5/10 - 1/10 = 4/10 = 2/5
Between the second two points, the function changes by
(5/2-1/2)/(1-0) = (4/2)/1 = 4/2 = 2
Comparing the first two y-coordinates, we have 1/10 and 1/2 = 5/10. This is the result of multiplication by 5.
Comparing the second two y-coordinates, we have 1/2 and 5/2. This is the result of multiplication by 5.
Comparing the rest of the y-coordinates, we can see that each time, the y-coordinate is multiplied by 5. This means the rate of change is 5.
Answer: The boy would probably need glasses.
Explanation: The Snellen vision test is a test used to measure visual acuity. The test is based in a chart printed with 11 lines of block letters. The first line has large letters, and can be any letter from the alphabet. The following rows increase numbers of lettes and decrease in size. This test is frequently used for doctors to evaluate the vision. So if the boy couldn't see the letters from a distance that any person could see without problems, he probably have nearsightedness, which means he has an eye condition that can view objects up close clearly but things farther away may appear blurry, and to correct that he will need to use glasses.
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