What is the primary function of the nephrons in the kidneys?

What is the principle behind the functioning of a magnifying glass?

Which organelle is responsible for cellular respiration and energy production in eukaryotic cells?

Which planet is often referred to as the "Evening Star" or the "Morning Star" and is the brightest natural object in the night sky after the Moon?

What is the primary function of the stomach in the digestive system?

Which atmospheric layer is home to the Northern and Southern Lights (auroras) due to the interaction of charged particles with Earth's magnetic field?

Which of the following is a type of cloud that often forms a dark, towering structure and is associated with thunderstorms?

What type of energy is associated with an object due to its position or condition?

What is the product of the reaction between an acid and a base?

In the human respiratory system, what structure prevents the entry of food into the trachea?