Topic Details (Notes format)

Who discovered the polymerase chain reaction (PCR)?

Who discovered the measurement of Earth's circumference?

Which planet is closest to the Sun?

Which river forms part of the border between Mexico and the United States?

Which organ in the body filters waste from the blood to produce urine?

In which European city can you ride a gondola along the Grand Canal?

Which ancient city is known as the ‘Lost City of the Incas’?

Which Indian state is the largest producer of coffee?

Which element has the chemical symbol "Ba"?

What is the hardest naturally occurring mineral?