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

What is the SI unit of electric potential difference?

Which of the following is a common property of metals?

What is the force that opposes the motion of objects through a fluid (liquid or gas)?

What is the chemical formula for table salt?

Which of the following is a strong acid?

What is the name of the phenomenon where a small fraction of sunlight is redirected by Earth's atmosphere, causing the sky to appear blue?

What is the chemical symbol for copper?

Which gas is responsible for the smell of rotten eggs?

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