which statement best explains why invertebrates often have outer skeletons but vertebrates do not?\nthe…

which statement best explains why invertebrates often have outer skeletons but vertebrates do not?\nthe outer skeleton provides protection, since invertebrates do not have backbones.\nthe outer skeleton surrounds the spinal cord, since invertebrates do not have backbones.\nthe outer skeleton helps invertebrates maintain homeostasis, since they lack spinal cords.\nthe outer skeleton helps invertebrates maintain homeostasis, since they lack membrane - bound organelles.

which statement best explains why invertebrates often have outer skeletons but vertebrates do not?\nthe outer skeleton provides protection, since invertebrates do not have backbones.\nthe outer skeleton surrounds the spinal cord, since invertebrates do not have backbones.\nthe outer skeleton helps invertebrates maintain homeostasis, since they lack spinal cords.\nthe outer skeleton helps invertebrates maintain homeostasis, since they lack membrane - bound organelles.

Answer

Brief Explanations:

Invertebrates lack backbones. Outer skeletons (exoskeletons) provide them with protection. Vertebrates have backbones and internal skeletons for support and protection, so they don't need outer - skeletons for the same purpose.

Answer:

The outer skeleton provides protection, since invertebrates do not have backbones.