Author Question: The window of opportunity presented by the demographic dividend generally ends as A) people start ... (Read 506 times)

stock · **on:** Jul 16, 2018

The window of opportunity presented by the demographic dividend generally ends as

A) people start having larger families.
B) people live longer.
C) economic pressures require more people to work.
D) rural populations increase.

Question 2

If a lake in which the water is usually about 20 feet deep experiences extreme eutrophication, we could expect to find

A) abundant fish, high oxygen levels, and very clear water.
B) abundant fish, high oxygen levels, but very cloudy water.
C) fewer fish than usual, lower oxygen levels, and very clear water.
D) some dead fish, low numbers of living fish, low oxygen levels, and very cloudy water.