Question

which label belongs in the area marked x?
○ are eukaryotic
○ have an outer skeleton
○ are heterotrophs
○ have a backbone

Explanation:

• All animals, whether vertebrates (with backbone) or invertebrates (without backbone), are heterotrophs. Heterotrophs are organisms that cannot produce their own food and rely on consuming other organisms for energy.
• Not all animals are eukaryotic (plants and fungi are also eukaryotic). Having an outer skeleton is a characteristic of some invertebrates (like arthropods) but not all animals. Having a backbone is only for vertebrates, not all animals.

Answer:

Are heterotrophs