Both gas and liquids are fluids. Fluids are substances which don't have fixed

The process in which energy is released by the combination of glucose and oxygen is known as

The most abundant element is oxygen within the

Nitrogen gas and nitrogen compounds, both have very important

The major use of nitrogen is production of

In fish, respiration takes place through

Air solubility of water is defined as the ability of air to be dissolved in

Rust is actually

When a gas is cooled or compressed it becomes a

The mixture important for human life and combustion is

Intake of carbon dioxide and giving out of oxygen is the only process named

Air is a mixture that makes up the

The condensation point of oxygen gas is

Ammonia is used to make compounds such as

The layer that blocks the ultraviolet (UV) rays from the sun is