yarn over hook = yoh. They both mean exactly the same thing and in this Video Tutorial I show you how to do a yarn over or yarn over hook using two ways; either with your left hand or your right hand.
Nitrogen (N) is essential for plant growth and is part of every living cell. It plays many roles in plants and is necessary for chlorophyll synthesis. Plants take up most of their N as the ammonium (NH 4 +) or nitrate (NO 3 -) ion.
Nitrogen is so vital because it is a major component of chlorophyll, the compound by which plants use sunlight energy to produce sugars from water and carbon dioxide (i.e., photosynthesis). It is also a major component of amino acids, the building blocks of proteins. Without proteins, plants wither and die.