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☆☆☆☆☆80KM or 50 miles is what the height the government uses to get the space shuttles into space
A black hole.
- marshes
- swamps
As a river gets older sediment load decreases due to the age of the river and erosion
The grasses and other plants in a wetland act as a filter for the water, removing contaminants, cleaning up the water. The soil holding the plants acts like a sponge, sops up pollutants.
All passenger airplanes cruise at the stratosphere.
the clouds
Which mesosphere? The one for the Earth's atmosphere or for the inside? Well, I'll talk about inside. Extremely hot temperatures (since it is the middle of the Earth's inside) so about a few thousand celsius. The mesosphere in the atmosphere is very cold with temperatures as low as -90 degrees celsius.
anything to keep you warm
Evidence is not used to support theory.
Theory is used to explain evidence, and to predict where and how new evidence may be found.
When new evidence is found that theory can't explain, the prevailing theory is modified or discarded.
Mesosphere
The shape, size, and mass of water molecules do not change between the solid and gas phases.
I have no idea
