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Pavel [41]
3 years ago
10

"an average human has a heart rate of 70 beats per minute. if someone's heart beats at that average rate over a 70-yr lifetime,

how many times would it beat?"
Biology
2 answers:
olya-2409 [2.1K]3 years ago
4 0
Given that an average human has a heart rate of 70 beats per minute and if one is to have a 70 year life span, the number of times it will beat is 2,575,440,000 times. This was computed by multiply 70 years by 365 days/year x 24 hours/day x 60 minutes/hour x 70 beats/min. Thus, the heart will beat numerous times before it finally stops.
FrozenT [24]3 years ago
4 0

Answer : The number of beats (N) in the lifetime is 2.6\times 10^9 beats.

Explanation :

First we have to determine the life time (T) of the person in the unit of minutes.

T = 70 year = (70 × 365 × 24 × 60) minutes

Conversions used :

1 year = 365 days

1 day = 24 hours

1 hour = 60 minutes

As we are given the rate (R) of the heart beat  is, 70 beats/minutes.

R = 70 beats/minutes

Now we have to determine the number of beats (N) in the lifetime.

N = RT

N = (70 beats/minutes) × (70 × 70 × 365 × 24 × 60) beats

N = 2.6\times 10^9 beats

Therefore, the number of beats (N) in the lifetime is 2.6\times 10^9 beats.

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Answer:

The one of best example would be appendix in humans.

Explanation:

In the past, the appendix may have helped in the digestion of the plants by producing mucus and prevent any type of infection. Plants with a high content of cellulose are digested with the help of the appendix as reported.

It is not a part of the human digestive system and considers as a vestigial organ. Vestigial organs are the organs that are present in an organism with no particular function and their removal will not lead to any harm. Humans do not need it because our digestive system is more efficient and works better in the first stages of digestion than they used to.

Thus, the correct answer is - appendix in humans.

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8 0
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