Urea plays a role in animal metabolism and is excreted in urine. It is commonly used as a fertilizer in agriculture due to its nitrogen content. Chemically, urea consists of two amino groups linked by a carbonyl group, and it is a white, odorless solid. When urea comes into contact with water, it releases ammonia, which has a strong odor.

What type of groups are linked by a carbonyl group in laurea?

• Amino groups

• Carboxyl groups

• Hydroxyl groups

• Methyl groups

What characteristic odor is associated with ammonia?

• Strong

• Sweet

• Foul

• Neutral