<span>..has evaporated from all the water sources around the world (streams, rivers, ponds, seas, oceans etc).
It is am established fact that the quantity of water present on the Earth has remained constant from the beginning of time. At any given point in time it may exist in one of its three forms i.e.ice, water or water vapor but there is no variation in its total quantity (hydrological cycle).</span>
Explanation:
A rock falling through Earth's atmosphere from outer space is called a asteroid
Not true, certain chemical transmitters stimulate certain receptors
The products of anaerobic respiration are lactic acid, carbon dioxide, and water.
The earth is about 6,000 years old.
