Assertion: chlorophyll | /r/HasProperty | necessary for photosynthesis
Facets:
Source sentences:
text: Chlorophyll is necessary for photosynthesis, which allows plants to obtain energy from light.
text: Chlorophyll is necessary for photosynthesis, which allows plants to obtain energy from light.
text: Because chlorophyll is necessary for photosynthesis, these mutants die as seedlings unless grafted onto another cactus with normal chlorophyll.