Topic Details (Notes format)

Which part of the human eye is responsible for focusing light on the retina?

What is the approximate age of the Earth?

What is the chemical formula for carbon dioxide?

What is the unit of electrical resistance?

What is the main component of the human skeleton?

What is the chemical symbol for gold?

What type of macromolecule is an enzyme?

What is the chemical symbol for the element iron?

What is the chemical formula of water?

What is the atomic number of hydrogen?