What is the primary function of the mitochondria in a cell?

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

What is the name of the force that opposes motion between two surfaces in contact?

Which of these elements has the highest electronegativity?

What is the SI unit of electrical resistance?

Which planet is known as the 'Morning Star' or 'Evening Star'?

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

Which of these is a noble gas?

What is the study of fossils called?

Which of the following describes the phenomenon where a wave changes direction as it passes from one medium to another?