This product is expensive compared to other equivalents.

We need new supports to maintain the stability of this building.

She gave me a handmade gift.

Using punctuation marks correctly is important for understanding sentences.

What is this solid made of?

There are sediments at the bottom of this lake that have accumulated over centuries.

Carbon dioxide is one of the main causes of global warming.

Hydrogen peroxide is often used for disinfecting wounds.

This factory is emitting a large amount of sulfur dioxide.

Carbon monoxide is a colorless, odorless gas, and it is dangerous to inhale.