Nitrogen Fixation: Root and Bacteria Interactions. Nitrogen is an important macronutrient because it is part of nucleic acids and proteins. ... The most important source of BNF is the symbiotic interaction between soil bacteria and legume plants, including many crops important to humans.
C) no till farming I believe is the correct answer
Answer:
The xylem consists of tracheary elements, xylem parenchyma cells, and xylem fiber cells.
Your answer is D I hope this helps ^^
