EVERYDAY SCIENCE

SCIENCE

ENVIRONMENTAL SCIENCES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
VOCAB:The average number of years an individual is expected to live.
A
life expectancy
B
infant mortality
C
death rate
D
growth rate
Explanation: 

Detailed explanation-1: -Q. The average expected length of life of a person is known as . Q. The average life expectancy for the United States population as a whole is 73.9 years, but children born in Hawaii will live an average of 77 years, and those born in Louisiana, 71.7 years.

Detailed explanation-2: -Life expectancy at a certain age is the mean additional number of years that a person of that age can expect to live, if subjected throughout the rest of his or her life to the current mortality conditions (age-specific probabilities of dying, i.e. the death rates observed for the current period).

Detailed explanation-3: -It is basically the number of years a person, animal, or plant is expected to live. The average life expectancy of human beings is 72 years, but it also differs from place to place. In India, it is 69.16 years.

Detailed explanation-4: -With rare exceptions, life expectancy has been on the rise in the US: it was 47 years in 1900, 68 years in 1950, and by 2019 it had risen to nearly 79 years. But it fell to 77 in 2020 and dropped further, to just over 76, in 2021.

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