The engine displacement of this car is 2000cc.

Please check the quantity of this product.

The atomic weight of helium is 4.

The radiation dose in this area exceeds the safety standards.

This year's snowfall is more than usual.

He was taken to the hospital due to an overdose of medicine.

Proportional representation is an important system to ensure the fairness of elections.

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

If cardiac output decreases, blood flow throughout the body worsens.

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