Which layer of the Earth is responsible for the convection currents that drive plate tectonics?

Which cell organelle is responsible for protein synthesis?

In the human eye, which part is responsible for focusing light onto the retina?

What is the term for a sudden and violent shaking of the ground caused by the movement of tectonic plates?

In the human reproductive system, where does fertilization typically occur?

What is the name for the process by which rocks are dissolved by acidic water, particularly effective on limestone and other carbonate rocks?

Which gas, abundant in the atmospheres of Uranus and Neptune, gives these planets their blue-green color?

What is the chemical formula for common table sugar (sucrose)?

What is the SI unit of power?

In the human reproductive system, what is the function of the testes in males?