Chlorophyll is a compound necessary for plants to perform photosynthesis.

He started his speech using a microphone.

This crossover between the anime and the game is very interesting.

A black-necked swan was swimming in the park's pond.

He is scheduled to have surgery on his bladder.

He hurt his ballsack and went to the hospital.

Chloromethane is often used in organic chemistry experiments.

Cycloolefins play an important role in organic chemistry.

This pond expresses the diversity of life like a microcosm.

He received the crown as a king.