The citric acid cycle plays a crucial role in the energy production of cells.

They built an abatis to prevent the enemy's invasion.

The cere of this bird is very brightly colored.

In our medical class, we learned about the function of the pyramidal tract.

He loves rock 'n' roll.

Nice to meet you.

In this forest, various organisms live by building a relationship of mutualism.

The destruction of the ozone layer has a significant impact on the Earth's climate.

She had her ovaries checked by a doctor due to a problem.

She is researching about medieval chastity belts.