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.
A centriole looks like wafer sticks glued together to make a round long shape.
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H1 Flu since those are mostly the symptoms of that kind of flu
Answer:
Natural selection leads to evolution.
