second-larges earthquake ever recorded in sumatra, indonesia?

Question

biosphere or hydrosphere or geosphere

Answer 1

Earthquakes occur in the Geosphere.

This one also had fairly significant (though temporary) impact on both the Hydrosphere and the Biosphere. The earthquake caused a huge tsunami (hydrosphere) which was the deadliest in recorded history, killing over 280,000 people, and countless other animals (biosphere).