Corn plants and milkweed plants grow in the same area. Over several years, the milkweed plants have taken over the field and the corn plants no longer have space to grow.This best demonstrates which type of an interaction between the plants?

The milkweed and corn plants are competing for limited space in the field. As the milkweed spreads, it leaves the corn without room to grow, so this is competition. Cooperation benefits both plants, while parasitism and commensalism describe relationships between different organisms where one or both are affected in other ways.

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