Which hormone is responsible for regulating metabolism in the human body?

What is the term for the circular movement of ocean water that is driven by wind, Earth's rotation, and differences in water temperature and salinity?

What is the chemical formula for nitric acid?

What is the main function of the circulatory system?

In the periodic table, which period do the alkaline earth metals belong to?

Which gas is responsible for the formation of the ozone layer in the Earth's atmosphere?

What is the purpose of the cilia in the respiratory system?

What is the primary function of white blood cells in the human body?

What is the function of the respiratory system in the human body?

Which type of rock is formed from the alteration of existing rock through heat, pressure, or mineral changes without melting?