Okay, so subsidence is a BIG problem... What should we do?In this week’s video, Michele discusses how residents of the Coachella Valley effectively mitigated subsidence in their area, thus preserving the ability to store water underground. Based on that experience, which of the following actions will likely best mitigate subsidence in the SF bay delta:

a. Inject carbon dioxide to great depths in the Central Valley in order to force open the closed pores between sediment grains.
b. Increase precipitation due to climate change, which will fill our current reservoirs.
c. Seed rain clouds so that additional rain falls in the Sierra Nevada and contributes to expected flow in the springtime.
d. Promote natural regular flooding of rivers that flow in through the Central Valley, so that water can infiltrate and recharge groundwater reserves.

question 1

the reasons for the global discontent in the early 1900s were the following:

desire for independence   was the main fight of many territories which were still under the control of colonial powers. dissatisfaction with peace terms of wwi . the best example is the case of germany, that was forced by the peace treaties to pay very expensive war reparations to the winners of wwi. some time later, german leaders broke relations and stopped recognizing the authority of those who imposed sanctions on their country, counting with the support of the population that was suffering the important economic consequences of the payment of reparations. overproduction of consumer goods which led to hyperinflation scenarios and very week currencies and economies.

question 2

the reasons for the great depression were the following, and these led to wall street crash in october 1929 and caused the subsequent great recession period.

high personal debt, that ended up with many bankrupt investors. falling stock price as everybody was getting rid of the stocks, many because they could not meet the amounts of money required by the margins that backed their investments.

question 3

italy: led by the fascists and benito mussolini   and promised to restore the greatness of the roman empire. germany: led by adolph hitler and the nazi party and conducted anti-jewish riots in austriajapan: was controlled by aggressive military leaders and invaded countries for their resources

2.