A greenhouse is defined as a structure that contains walls and roof made up of transparent material like glass or plastic, under which climatic condition is maintained for the regular growth of plants inside it.
In a greenhouse, best position for pant is maintained so that exposure of sunlight should be in its optimal range.
This is so because there must be adequate amount of sunlight falling on the plant for its proper growth and development because more or less than normal amount of sunlight is not good for plants.
Hence, a plant in greenhouse should be positioned so that it's exposure to sunlight would be within its optimal range.
If the moon revolved faster than normal, it would create more frequent solar eclipses because the moon would come to the point where it covered the sun faster than usual.
The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment. The cell membrane consists of a lipid bilayer that is semipermeable. The cell membrane regulates the transport of materials entering and exiting the cell.
