What is the average life span of a human

while the overall life expectancy of a human being differs based on sex and country, 72.2 is considered to be the average worldwide life expectancy as of 2017

79 years but it varies by country

Explanation:

not sure but try c two haploid cells

explanation:

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.