Question

what do we call it when two or more crop species are planted in the same area to promote a synergistic interaction?
contour plowing
intercropping

Explanation:

Intercropping is when multiple crop species are planted together in the same area to promote beneficial interactions. Contour plowing is about plowing along the contours of land to prevent soil erosion, which is different from the described scenario.

Answer:

Intercropping