Assertion: invertebrate's system | /r/HasProperty | nervous
Facets:
Source sentences:
text: As invertebrates diversified in “prehistoric” oceans, evolutionists suggest that their nervous systems became more complex and that structures that sense the environment (light, vibration, chemical detection, etc.) gave these new animals an advantage.
text: Invertebrates are useful animals to study because their nervous systems work the same way as that of vertebrates.