The hippocampus a) aids in balance and control of body movement. b) contributes to dramatic gains in motor coordination. c) plays a vital role in memory and in images of space that us find our way. d) supports smooth coordination of movements on both sides of the body.

C) plays a vital role in memory and images of space that help us find our way

Crop rotation is a method of soil conservation because  it avoids the depletion of soil nutrients.

It is the practice of growing a series of different types of crops in the same area in sequenced seasons. Crop rotation helps in reducing soil erosion and increases soil fertility and crop yield.

Growing the same crop in the same place for consecutive (many) years in a row disproportionately depletes or consumes the soil of certain nutrients.