Whatever fossil is at the lowest layer is the oldest cuz the old fossils lived along time ago and when they died the fossils were buried.
Longitude is when your measuring west of standard of meridian of a celestial object
The ring of fire is many under water volcanoes, it is a circle of volcanoes. It just takes plates to move or magma build up for it erput
Answer:
if your question is what do we need to survive like the requirements, it would literately be every organ you have with food and water. you also need blood and a nervous system.
Explanation: