Were Lewis and Clark successful? Why or why not?

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.

d is the best answer for this question.

the first forms of writing came from them in the form of pictographs around 3100 bc.

a memoir is the correct answer