Which of the following soil conservation strategies involves plowing furrows perpendicular to the slope of land to prevent erosion?
a. terracingcrop
b. rotationcontour
c. farmingshelterbelts

A - Terracing crop

Explanation: Terracing crop is a soil conservation strategy of growing crops on hill side by planting crops on graduated terraces perpendicular to the slope of the land .  This method is useful in reducing soil erosion.

world war i had a devastating effect on german-americans and their cultural heritage. up until that point   german-americans, as a group, had been spared much of the discrimination, abuse, rejection, collective mistrust experienced by so many different racial and ethnic groups in the history of the united states. indeed, over the years, they had been viewed as a well integrated and esteemed part of american society. all of this change with the outbreak of war.