Question

if scientists are studying the populations of egrets, herons, marsh crabs and spartina grass, but not the water or the rocks in the salt marsh, what level of ecological organization would they be studying? ecosystem community organism

Explanation:

• An ecosystem includes both biotic (living organisms) and abiotic (non - living components like water, rocks) parts. Since the scientists are not studying water or rocks (abiotic factors), it's not an ecosystem.
• An organism is a single living entity. Here, multiple species (egrets, herons, marsh crabs, Spartina grass) are being studied, so it's not an organism.
• A community is a group of different populations (different species) living and interacting in a particular area. The scientists are studying multiple populations (different species) of egrets, herons, marsh crabs, and Spartina grass, which fits the definition of a community.

Answer:

Community