List some of the activities/events organized by the SCLC

It played key roles in the March on Washington in 1963 and the Selma Voting Rights Campaign and March to Montgomery in 1965. The SCLC also broadened its focus to include issues of economic inequality, starting the Poor People's Campaign in 1967. Martin Luther King, Jr

Explanation:

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 right answer is d