Which of the following were foreign policy challenges for President Carter? O the Iran Hostage Crisis
O the Soviet invasion of Afghanistan
O the Helsinki Accords
the Persian Gulf War

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.

but equal

explanation:

plessy v. ferguson (1896) is an important us supreme court decision that kept racial segregation based on "separate but equal". however, these racially segregated trains and places were not actually equal. plessy v. ferguson (1896) was finally overturned by brown v. board of education in 1954.