Question: Answer this question: how much of earth is covered ocean water?
Answer: Approximately 72% of the planet's surface (~3.6x108 km2) is covered by saline water that is customarily divided into several principal oceans and smaller seas, with the ocean covering approximately 71% of the Earth's surface.

Question: Answer this question: what is grist mill stone?
Answer: A gristmill (also: grist mill, corn mill or flour mill) grinds grain into flour .

Question: Answer this question: how does lsd impact the human body?
Answer:
LSD is non-addictive, is not known to cause brain damage, and has extremely low toxicity relative to dose .