The answer to this question is nitrates. Nitrate is a
compound that is composed of nitrogen and oxygen. Nitrates are used as a
preservatives in food, can be used as fertilizer, an ingredient to make gunpowder,
and also an ingredient in making explosives or bomb.
Explanation:
Liquids and gases are similar in both shape and volume because they both have its shape determined by its surroundings.
Gases, liquids and solids are all made up of atoms, molecules, and/or ions
The answer is called the foramen ovale. Hope this helps.