BIOLGY TEST!! PLEASE HELP WILL MARK BRAINLIEST! 1. Which action is not a cause of soil depletion? •multiple cropping •deforestation
•overtilling
•erosion

2. What role did the Dust Bowl play in the history of soil conservation?
•It disproved the idea that irrigation was unnecessary .
•it led farmers to make voluntary efforts to conserve soil.
•It stirred government to enact the first soil conservation laws.
•it showed that the American central plains did not have good quality soil.

3. What was the most important result of the Meireki fire of 1567 in Edo ?
•It cleared large tracts of the city for agriculture .
•It decreased competition between the daimyos for resources .
•It decreased the population of the city, thereby reducing timber demand .
•It caused the ruling class to realize the dangers of deforestation .

4. Educating the public is an important aspect of which fire management practice ?
•suppressing a fire at early stages
•controlled burning •suppressing a fire altogether
•preventing fires

5. How might poverty affect soil loss?
•Poverty can lead farmers to continue practices that deplete the soil but yield quick crops.
•When soils are poor in nutrients , crop yields are low.
•Poor people no longer have the desire to farm. •When large -scale deforestation occurs , erosion increases, thus depleting the soil

6. What is a soil horizon? •bare soil from which all vegetation has been removed
•soil that is still mostly rock material
• a layer of soil with characteristic properties
• a pictorial view of soil showing its ecosystem

7. What factor contributed to the success of the Tokugawa shogunate's afforestation efforts? •relative peace
•foreign influences
•strong central government
•economic prosperity

8. Which tree harvesting method promotes the growth of younger trees by selectively cutting mature trees over a period of 10 years ?
•selective cutting of groups of trees
•shelterwood cutting •clearcutting
•selective cutting of single trees

9. Which factor is most likely the greatest contributing factor to the declining Atlantic cod populations?
•increasing reproductive capacity
•water temperature
•legal regulations •overfishing