General Knowledge :: Environmental Science
- _________ energy is the main driving force of the ecological system.
- Most of the natural gas used in the United States is consumed by
- Chemical reactions triggered by ________ transforms the organic material into hydrocarbons.
- Sunlight that bounces off a surface is said to be ________ from the surface.
- If we uncover half of the forest, covering of the earth, what crisis will be produced at most and at first?
- An example of one way ecological cycle is
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