which term represents animals without backbones? \n○ invertebrates\n○ heterotrophs\n○ autotrophs\n○…

which term represents animals without backbones? \n○ invertebrates\n○ heterotrophs\n○ autotrophs\n○ vertebrates
Answer
Brief Explanations:
To solve this, we analyze each term:
- Invertebrates: Animals without a backbone (vertebral column).
- Heterotrophs: Organisms that obtain food from other sources (not about backbone).
- Autotrophs: Organisms that make their own food (not about animals/backbone).
- Vertebrates: Animals with a backbone.
So the term for animals without backbones is invertebrates.
Answer:
A. invertebrates