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marusya05 [52]
3 years ago
5

If we are in a pool submerged in water and someone shouts from outside, do we hear the sound? What happens on your tour? What ph

enomenon occurs?
Biology
1 answer:
Vikentia [17]3 years ago
5 0
The water acts like a wall that doesn’t let sound get under there unless it’s as loud as a tigers roar
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Elias conducted an experiment about the effects of exercise on the heart rate of teenagers. Before morning basketball practice,
padilas [110]

The <u><em>correct answer</em></u> is:

He needs to select a more representative sample.

Explanation:

Choosing students from the basketball team for the sample he uses on a study of heart rates and exercise will be a biased sample.  This is because students on the basketball team are potentially healthier than other students, which means that exercise will not have a large an effect on their heart rate as it would if they were not as healthy and not as physically fit.

In order to reduce the amount of bias, he should choose students from different groups throughout the school.

8 0
3 years ago
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3 0
3 years ago
Have afib and now have been diagnosed with left bundle branch block no cardiac artery disease
GrogVix [38]
Well... I get the felling I know what question you are trying to ask. Atrial Fibrillation is a type of arrhythmia that interferes with the pumping of blood through the Atrium of the heart. A bundle branch block is an interference of the electrical system through the heart. Non of these are particularly that dangerousso don't worry about dying... Though have someone close by in case you go into Cardiac Arrest.

If your worried about getting a heart attack, that is a blood flow problem which can result from CAD. Don't worry though cause the two other condition do not particularly influence the other.

CAD is circulatory, A fib and branch block are electrical.
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3 years ago
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