Which of the following is the best example of an ecosystem? A. a nest of mockingbirds, some bullfrogs, a pond, and a sandy shore B. bees and wasps around a group of purple cornflowers C. a school of sunfish
"A. a nest of mockingbirds, some bullfrogs, a pond, and a sandy shore" is the best example of an ecosystem, as it is properly diverse, including biotic and abiotic bodies.
