What is the approximate age of the universe?

Which of these elements has the highest electronegativity?

What is the function of the Golgi apparatus in a cell?

What does the Heisenberg Uncertainty Principle state?

Which gas is most responsible for the greenhouse effect on Earth?

What is the name of the force that holds the nucleus of an atom together?

What is the Cambrian Explosion?

Which of the following is a non-Newtonian fluid?

What is the name of the theory that describes the fundamental particles and forces (except gravity)?

What is the name of the process by which plants convert light energy into chemical energy?