Question

what are the 4 levels of organization in an ecosystem (in order)?
organism, producer, consumer, host
population, organism, ecosystem, community
organism, predator, population, community
organism, population, community, ecosystem

Explanation:

The levels of organization in an ecosystem from the simplest to the most complex are organism (an individual living thing), population (a group of the same - species organisms), community (multiple populations of different species), and ecosystem (community plus its abiotic environment).

Answer:

Organism, Population, Community, Ecosystem