It's called Chromatography.
Trees, plants, oxygen tank
Answer:
Pollution is the presence of harmful materials in the environment of a substance that has harmful or poisonous effects. Nitrogen dioxide (NO2) and Carbon monoxide (CO) are 2 pollutants of air and Industrial Waste and Sewage and Wastewater are 2 pollutants of water.
Meiosis is the cell division in which there is a formation of chiasmata......which lead to variation......
