So the important factors are air pressure, temperature, and humidity. The base it is normal and easy to breathe. As you go towards the summit the temperature drops, air density and pressure is low; air is thin, and the humidity is also low. This results in hyperventilation as the air pressure is low. Also there is a chance of getting Hypoxia. The environment is harsh.
Since they can go back to they're original form after a reaction that's why it's reusable
Anaerobes/ Anaerobic organisms
It's not.
If the plants are growing under the ice and the ice is floating above it on the surface of the water and the ice blocks the light from getting to the plant.
