Earth is approximately spherical in shape like all planets and stars. Earth is composed mostly of rock. Three-fourths of its surface is covered by a relatively thin layer of water (some of it frozen), and the entire planet is surrounded by a relatively thin blanket of air.
Answer:
try and condition before (your not gonna be able to run a 6 minute mile at first) drink alot of water, get sleep, and eat healthy. I am a cross country runner so I should know.
Explanation:
