The correct answer should be the endocrine system.
Hormones are secreted by endocrine glands in endocrine systems. Opposite of this would be the exocrine system consisting of exocrine glands.
<span>Eukaryotic Can't be multicellular because it's one cell, heterotrophic are organisms that feed on other organisms to get energy, and prokaryotes don't have membrane-bounded organelles</span>
Species is a group of living organisms consisting of similar individuals capable of exchanging genes.
Hope it helps yah (◕ᴗ◕✿)
Hydrosphere<span> isnt an isolated system, it interacts with the other global systems, which includes the </span>atmosphere and l<span>ithosphere
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