What is the name of the boundary between the Earth's crust and mantle?
Q1. What is the name of the boundary between the Earth's crust and mantle?
Answer: Mohorovičić Discontinuity
Explanation: The Mohorovičić Discontinuity (or "Moho") marks the boundary between Earth's crust and upper mantle, named after Croatian seismologist Andrija Mohorovičić who discovered it in 1909. It lies about 5–10 km beneath the ocean floor and 20–90 km beneath continents.