Search results
Results from the WOW.Com Content Network
John T. Arundel and Co. was engaged in Pacific trading of phosphates, copra, and pearl shell. While working in the company's Sydney office in 1899 Ellis determined that a large rock from Nauru being used as a doorstop was rich in phosphate. Following the discovery Ellis traveled to Ocean Island and Nauru and confirmed the discovery.
The history of fertilizer has largely shaped political, economic, and social circumstances in their traditional uses. Subsequently, there has been a radical reshaping of environmental conditions following the development of chemically synthesized fertilizers .
Consequently, the widespread use of phosphate fertilizers has increased soil fluoride concentrations. [95] It has been found that food contamination from fertilizer is of little concern as plants accumulate little fluoride from the soil; of greater concern is the possibility of fluoride toxicity to livestock that ingest contaminated soils.
5-2 million years ago: Hominids shift away from the consumption of nuts and berries to begin the consumption of meat. [1] [2]A hearth with cooking utensils. 2.5-1.8 million years ago: The discovery of the use of fire may have created a sense of sharing as a group.
Phosphorus must have been awe-inspiring to an alchemist: it was a product of man, and seeming to glow with a "life force" that did not diminish over time (and did not need re-exposure to light like the previously discovered Bologna Stone). Brand kept his discovery secret, as alchemists of the time did, and worked with the phosphorus trying ...
Specific food choices and food behaviors can tell your body different things, such as: • Omega-3 Fatty Acids (in, e.g., salmon, sardines, chia seeds, walnuts) to immune cells: Put down your ...
Phosphorus is an essential macromineral for plants, which is studied extensively in edaphology to understand plant uptake from soil systems. Phosphorus is a limiting factor in many ecosystems; that is, the scarcity of phosphorus limits the rate of organism growth.
In chemistry, a phosphate is an anion, salt, functional group or ester derived from a phosphoric acid. It most commonly means orthophosphate, a derivative of orthophosphoric acid, a.k.a. phosphoric acid H 3 PO 4. The phosphate or orthophosphate ion [PO 4] 3− is derived from phosphoric acid by the removal of three protons H +.