What is the function of the ciliary muscle in the human eye?

What is the chemical symbol for sodium?

What is the name of the region in space beyond Neptune, populated by small icy bodies, including Pluto?

What is the SI unit of magnetic flux?

What is the name of the closest galaxy to the Milky Way, which is also a part of the Local Group of galaxies?

In a chemical equation, what do the coefficients represent?

Which gas is produced during the process of photosynthesis in plants?

Which hormone is responsible for the development of secondary sexual characteristics in males?

What is the name of the process where a gas changes directly to a solid without passing through the liquid phase?

What is the term for the point in a planet's orbit where it is closest to the Sun?