Well if you mean what does the controlled part of a scientific investigation, it is the part of the investigation that will be your control or your base, untouched, original, data and such.
evaporation is when a mass of water is hit by sunlight and some of it turns to a vapor. In the atmosphere, that vapor cools and the water molecules fuse with other water molecules, forming clouds. (condensation) When the clouds become full, the water precipitates onto land or into the ocean in the form of rain, sleet, snow or hail (precipitation).
Answer:
it is the only environment capible of sustaining life.
Explanation:
it has oxygen, water, and its the right temp. those are all needed for life, with them we would not survive.
The earth's basin and range topography is a result of: c. vertical movement along faults.
the result of basin and range topography also called extensional tectonics.
hope this help
