His favorite proverb is 'Effort is always rewarded.'

He affirmed his opinion.

Freedom of speech is a fundamental right of democracy.

Collagen is important for maintaining the firmness and elasticity of the skin.

She uses a diaeresis in her name.

Year in, year out, we continue to grow.

Rare earth elements are essential materials for the manufacture of electronic devices.

An isotope refers to elements with the same atomic number but different numbers of neutrons.

Hydrogen is the most abundant element in the universe.

Transition elements play an important role in chemical reactions.