Explanation:
Changes in temperature and precipitation can disrupt a wide range of ... In addition, higher temperatures lead to more evaporation, so ... annual anomalies, or differences, compared with the average temperatur
Answer:
Goverment can pass laws regulating the use of water for certain things like for their lawn or garden. Or they could encourage people to flush the toilet less.
Explanation:
This would reduce the use of water because a lot of water is used for these unnecessary things.
Set this up as
10 = 40 (1/2)t/28
and solve for t in years.
10/40 = (1/2)t/28
log(0.25) = (t/28) log(0.5)
t = 28 log(0.25) / log(0.5) years = 56 years
Test the answer:
56 years = 2(28 years) = 2 half-lives, so the remaining amount should be 1/2 of 1/2 of the initial amount, i.e. 1/4 of the initial amount, and 10 mg = 1/4 of 40 mg.
