If the population of a country doubles every 25 years, a 1980 population of 10 million will reach 80 million in the year
a. 2005.
b. 2030.
c. 2055.
d. 2080.
e. 2105.
Question 2
Suppose that we allowed each person 1000 m3 of living space in a large building, with ceiling height 3 m.
To the nearest order of magnitude, how many 1000 m high
buildings would have to be built to house the entire population of 8.5 x 1014 people on the
energy-limited Earth if each building's base were 100 km on a side?
a. 101
b. 102
c. 105
d. 108
e. 1013
Earth’s history spans 4.5 billion years. Geologists and paleontologists have pieced together the his
Fertility and Population Density, 1850
In many societies, manhood is not bestowed upon males simply because they reach a certain age. ...
School age (late childhood): 6–12 years, or to puberty.
Limiting factors restrain population growth
Mount Pinatubo caused ~1˚C cooling for up to 5 years