This toothpaste contains fluoride.

On cold nights, a warm quilt is necessary.

She bought a new dress at that boutique.

He is majoring in physical chemistry at university.

I am majoring in physical chemistry at university.

Can this scrap be recycled?

Our body is constantly excreting waste products.

Antimatter is said to have the opposite properties of matter.

The animal kingdom is incredibly diverse, and it is said that there are still species that have not been discovered.

Gymnosperms are a type of plant that directly release their seeds into the air.