10. How did Congress decide to pay for Social Security costs? a national sales tax
a tax on large estates
a tax on workers' paychecks
the sale of federal bonds

a national sales tax

Explanation:

through taxes on national sales

crop rotation kepy different plants in the soil instead of once constintly. when switching out plants you have different nutrients being absorbed at different speeds and different roots growing differently therfore the spoil and water flow have to adapt and carry fresh nutrients to carry the constant changes that were going on in the soil.