Question

what is dispersal? when any resource moves between ecosystems when ecological roles become more diverse when one or more organisms move between ecosystems when abiotic resources move between ecosystems

Explanation:

Dispersal in ecology refers to the movement of organisms (individuals or populations) from one area or ecosystem to another. The first option is too broad (any resource), the second is about ecological role diversity (not dispersal), the fourth is about abiotic resources only. The third option correctly defines dispersal as the movement of one or more organisms between ecosystems.

Answer:

C. When one or more organisms move between ecosystems