According to the law on specified alien species, the import of certain organisms is prohibited.

She is learning the grammar of the present progressive form.

He is suffering from combat stress reaction.

The concept of chemical equivalent is essential for understanding chemical reactions.

My company specializes in the manufacture of fine chemicals.

Chemotransmitters play an important role in the transmission of information between nerve cells.

Stoichiometry is a method for calculating the amount of substances in a chemical reaction.

No chemical flavoring is used in this ramen at all.

She is suffering from Eating Disorder Not Otherwise Specified.