This yogurt is fat free.

I love organic chemistry classes.

This is a junction in our lives.

The government is considering the introduction of a carbon tax.

He started exercises to strengthen his sternocleidomastoid muscle.

She decided to undergo facial reconstructive surgery.

He is dedicated to the study of organogenesis.

Basic oxides react with acids to produce salt and water.

This area is affected by radioactive fallout from past nuclear tests.

I learned about valence in chemistry class.