Black Holes: Facts, Theory & Definition. Black holes are some of the strangest and most fascinating objects found in outer space. They are objects of extreme density, with such strong gravitational attraction that even light cannot escape from their grasp if it comes near enough.
Chemigation is the injection any chemical such as nitrogen, phosphorus or a pesticide into irrigation water and applied to the land using the irrigation system. The proper use of chemigation is recognized as a Best Management Practice (BMP) for irrigated agriculture.
(general) The act or state of joining together; union; conjunction. Supplement. Bacterial conjugation is a beneficial process in bacteria since they can acquire a gene that confers survival or a novel characteristic which enables them to thrive in harmful conditions or to utilize a new metabolite.