Topic Details (Notes format)

Which empire used quipus (knotted cords) for record-keeping instead of a formal writing system?

Which city in Switzerland is known for its medieval clock tower called the Zytglogge?

Which part of the ocean floor is a long, steep-sided depression, usually deeper than 6,000 meters?

Who discovered the mechanism of phototransduction?

Which element has the chemical symbol "Ni"?

Who discovered the Wnt signaling pathway?

Which vitamin deficiency leads to rickets in children, affecting bone development?

In which ocean is Madagascar located, off the southeastern coast of Africa?

Which is the lightest of the three main subatomic particles?

Which scientist proposed the heliocentric model with the Sun at the center of the solar system?