The federal program created in the 1960s which provides medical care to the poor and indigent who qualify is called

Medicaid

Explanation:

The federal program created in the 1960's which provides medical care to the poor and indigent who qualify is called Medicaid. Medicaid is a social program that was created in 1965,

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.

the answer for 3 is b and the answer for 4 is d