A biologist is surveying the animal life found in the deciduous forests of the Adirondack Mountains in New York. He spots a mother black bear and cubs, a herd of white-tailed deer, 15 bird species, and two species of trout. Beneath decaying logs, he discovers insects, termites, salamanders, and earthworms. Which describes the variety of animals surveyed by the biologist. PLS ANSWER

Only invertebrates were surveyed in the forest.

Only vertebrates were surveyed in the forest

.Vertebrates and invertebrates were surveyed in the forest.

vertebrates and invertebrates were surveyed in the forest

vertebrates are animals that have a backbone.

invertebrates are animals without a backbone

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x would be the most and the least would be y because there are more fruit   and seeds than flock z has insects