Weegy: Homeostasis is the property of a system in which variables are regulated so that internal conditions remain stable and relatively constant. User: A scientist is studying an organism and has classified it as an animal. Which statement must be true about the organism? It is multicellular. It displays radial symmetry. It has a backbone. It contains cells without nuclei. Weegy: A scientist is studying an organism and has classified it as an animal. It is multicellular must be true about the organism. User: Which term represents animals with backbones? invertebrates heterotrophs autotrophs vertebrates Weegy: The term for animals with backbones is vertebrates. (More)

Weegy: Autotrophs are organisms that produce their own food which include fats carbohydrates and proteins. User: Which statement describes a difference between a jellyfish and a frog? A jellyfish lacks vertebrae, whereas a frog has a spinal cord. A jellyfish cannot reproduce sexually, but a frog can. A jellyfish makes its own food, whereas a frog is a heterotroph. A jellyfish is a prokaryote, whereas a frog is a eukaryote. (More)