Answer:
Gravity, low oxygen, and rock slides.
Step-by-step explanation:
Some rock climbers train for years but are hardly prepared for some situations.
Gravitational force
Gravitational force is obviously one of the biggest obstacles in climbing. You are essentially going against this very strong force to pull your body mass up the beautiful terrain. Gravity is defined as the force of attraction between all masses in the universe, gravity is what allows the sport of climbing.
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